JBL TI 84 Plus CE Getting Started Guide View: TI84 EN GB

User Manual: JBL View: TI-84 Plus CE Guidebooks

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Getting Started with the
TI-84 Plus CE
Graphing Calculator
This guidebook applies to software version 5.3. To obtain the latest version of the
documentation, go to education.ti.com/go/download.
Important Information
Except as otherwise expressly stated in the Licence that accompanies a program, Texas
Instruments makes no warranty, either express or implied, including but not limited to
any implied warranties of merchantability and fitness for a particular purpose,
regarding any programs or book materials and makes such materials available solely
on an "as-is" basis. In no event shall Texas Instruments be liable to anyone for special,
collateral, incidental or consequential damages in connection with or arising out of the
purchase or use of these materials, and the sole and exclusive liability of Texas
Instruments, regardless of the form of action, shall not exceed the amount set forth in
the licence for the program. Moreover, Texas Instruments shall not be liable for any
claim of any kind whatsoever against the use of these materials by any other party.
EasyData is a trademark of Vernier Software and Technology.
© 2017 Texas Instruments Incorporated
ii
Contents
Important Information ii
Using Your TI-84 Plus CE Graphing Calculator 1
Key Features 1
Using the Keyboard 2
Turning the TI-84 Plus CE On and Off 2
Using the TI-84 Plus CE Keyboard 3
Setting the Display Brightness 6
Using the Home Screen 7
Working with Menus 14
Setting Up the Calculator Modes 20
Setting Modes 20
Changing Mode Settings 20
MATHPRINT™ CLASSIC 21
NORMAL SCI ENG 22
FLOAT 0 1 2 3 4 5 6 7 8 9 22
RADIAN DEGREE 23
FUNCTION PARAMETRIC POLAR SEQ 23
THICK DOT-THICK THIN DOT-THIN 23
SEQUENTIAL SIMUL 24
REAL a+bi re^(theta i) 24
FULL HORIZONTAL GRAPH-TABLE 24
FRACTION TYPE: n/d Un/d 25
ANSWERS: AUTO DEC 25
STAT DIAGNOSTICS: OFF ON 25
STAT WIZARDS: ON OFF 26
SET CLOCK 26
LANGUAGE 26
Evaluating Expressions 28
Order of Operations 28
Entering Expressions and Instructions 30
Working with Graphs 34
Using Colour on the TI-84 Plus CE 34
Using QuickPlot and Fit Equation 35
Working With Images 36
Using Piecewise Function Graphing 36
iii
iv
Working with Tables 39
Working with Matrices 40
Using the Matrix Editor 40
Performing a Calculation with a Matrix 40
Working with Probability and Statistics 42
Working with Probability 42
Working with Statistics 43
Working with Variables 47
Using Variable Names 47
Storing Variable Values 49
Recalling Variable Values 50
Solving Equations 51
Numeric Solver 51
Managing Calculator Files 53
Transferring the OS from calculator to calculator 53
Compatibility with Graphing Calculators 53
Using Press-to-Test 55
Setting Up Test Mode 55
Bringing a Calculator Out of Test Mode 57
Using Applications (Apps) 58
Cabri™ Jr. App 58
CellSheet™ App 58
Conic Graphing App 58
Inequality Graphing App 59
Periodic Table App 59
Polynomial Root Finder and Simultaneous Equation Editor App 59
Probability Simulation App 59
Science Tools App 60
SmartPad™ CE App 60
TI-Innovator™ Hub App 61
Transformation Graphing App 61
Vernier EasyData™ App 61
Using Accessories 62
Using TI Desktop Software 62
Using the TI Charging Station CE 62
Using, Replacing, and Charging Batteries 64
Diagnosing and Correcting Error Conditions 68
Diagnosing an Error 68
Correcting an Error 68
General Information 69
Texas Instruments Support and Service 69
Service and Warranty Information 69
Precautions for Rechargeable Batteries 69
v
Using Your TI-84 Plus CE Graphing Calculator
The TI-84 Plus CE graphing calculator comes with a USB cable, plenty of storage and
operating memory. It also comes pre-loaded with software applications (Apps) to help
you perform pre-algebra, algebra, calculus, biology, chemistry, and physics
calculations.
Key Features
•High resolution, full-colour backlit display
- Distinguish between multiple graphs and plots with colour-coded equations,
plots and objects
- Make graphs easier to read by adding grid lines
•TI Rechargeable Battery
- Recharges using a USB cable, wall charger or TI Charging Station CE
•Familiar TI-84 Plus functionality
- Similar menu structure and navigation as the TI-84 Plus family with enhanced
features
- Built-in MathPrint™ functionality to input and view maths symbols, formulas
and stacked fractions
•Import and use images
- Use TI Connect™ CE Software to send images (.gif, .jpg, .png, .tif, .bmp) from a
computer to a calculator
- Graph on top of images to connect concepts to the real world
The applications extend the functionality of your calculator, allowing you to perform
specific maths and science functions and to deepen your understanding of concepts.
Pre-loaded applications include:
• Cabri™ Jr • Probability Simulations
• CellSheet™ • Science Tools
• Conic Graphing • TI-Innovator™ Hub
• Inequality Graphing • Transformation Graphing
• Periodic Table • Vernier EasyData®
• Polynomial Root Finder and
Simultaneous Equation Solver
Use this guide to learn more about these features and other essential tools of your
TI-84 Plus CE graphing calculator.
Using Your TI-84 Plus CE Graphing Calculator 1
2 Using the Keyboard
Using the Keyboard
This section covers basic graphing calculator settings and explains how to navigate the
home screen and menus.
Turning the TI-84 Plus CE On and Off
This section covers basic on and off features for your graphing calculator.
Turning the Graphing Calculator On
Press É.
An information screen displays:
• Press Àto continue to the home screen but not see this information screen the
next time you press É.
-or-
• Press Áto continue to the home screen.
Note: Any entry from this information screen will take you to the home screen (a
blank screen).
The information screen shows the following for information purposes only. You must
go to the home screen before you can complete the following.
• Press ƒ ^ -ato locate shortcut menus.
• Press Ãon most menu items for Catalog Help.
Note: This message also displays when you reset RAM.
You may see a context-sensitive shortcut menu located at ƒ b for interactive
features or actions such as interactive drawing features from the graph screen or
TI-Basic program editing.
Turning the Graphing Calculator Off
Press y M.
• The Constant Memory™ function retains settings and memory, and clears any error
condition.
• If you turn off the TI-84 Plus CE and connect it to another graphing calculator or
personal computer, any communication will “wake" it up.
Automatic Power Down™ (APD™)
• To prolong battery-life, APD™ automatically turns the TI-84 Plus CE off after about
three to four minutes of inactivity.
• If APD™ turns the graphing calculator off, it will return as you left it, including the
display, cursor, and any error.
Using the TI-84 Plus CE Keyboard
This section describes the functions of specific keys on the graphing calculator
keyboard.
TI-84 Plus CE Keyboard
Graph/Plot Setup Keys allow access to
interactive graphing features. When some
graph screen features are active, you may
see a shortcut menu in the ƒ b
location for feature options.
Editing Keys allow you to edit expressions
and values.
Math and Statistics Keys display menus
that access math, statistics, and other
basic functions.
Scientific Keys allow access to the capabilities of a standard scientific
calculator—including trigonometric functions.
Number Keys allow you to enter numbers.
Common Math Functions allow you to divide, multiply, subtract, and add.
Using the Keyboard 3
4 Using the Keyboard
Function Keys
yAccess the second function
printed to the left above
each key.
ƒAccess the third function
printed to the right above
each key.
ƒ
^-a
Access shortcut menus for
fraction templates, n/d,
quick matrix entry, select
MATH menus and VARS
menu functions.
ƒ b Context-sensitive shortcut
menu for interactive
features or actions such as
interactive drawing features
from the graph screen or TI-
Basic program editing.
Using the Function Keys
Primary
Function
The function appears on the key. Ex: to display the MATH menu, press
».
Secondary
Function
The function appears above the key in the same color as the ykey.
When you press the ykey, the key name printed above the other key
becomes active for the next keystroke.
Ex: to display the TEST menu, press yand then :.
The flashing cursor becomes Þwhen you press y.Þmay also appear
in the status bar.
Tertiary
(Alpha
Key)
Function
The function appears above the key in the same color as the ƒkey.
The third function allows you to enter alphabetic characters and special
symbols, and to access SOLVE and shortcut menus.
Ex: to display the letter A, press ƒand then [A].
• To enter several alphabetic characters in a row, press y 7. This
locks the alpha key in the ON position so that you avoid having to
repeatedly press ƒ. Press ƒagain to unlock.
• The flashing cursor becomes Øwhen you press ƒ.Ømay also
appear in the status bar.
Using the Keyboard 5
6 Using the Keyboard
Setting the Display Brightness
This section covers how to set the display brightness and explains automatic dimming.
Adjusting the Display Brightness
You can adjust the display brightness to suit your viewing angle and lighting conditions.
To adjust the brightness, follow these steps.
▶Press y † to darken the screen one level at a time.
▶Press y } to lighten the screen one level at a time.
The TI-84 Plus CE retains the brightness setting in memory when it is turned off.
Automatic Dimming
The TI-84 Plus CE automatically dims the screen brightness after 90 seconds of
inactivity.
▶Press Éto return the screen to the preset brightness.
▶Pressing Éto adjust the brightness will not affect any of the current state of your
calculator work.
Using the Home Screen
Expressions
Answers
Use the home screen to enter instructions and evaluate expressions. Answers appear
on the same screen. Most calculations are stored in home screen history. Press }and
†to scroll through the entry history and paste the entries or answers to the current
entry line.
1. Enter a calculation.
2. Press y 5 from any screen until you get back to
the home screen.
3. Press y C 3¡ Ã 4¡ ~ Ã 6Í.
Note: When you are in a MathPrint™ template, the cursor
turns into a right arrow to indicate that you must press
~to get out of the template before you continue entering
the calculation.
Displaying Entries and Answers
Mode settings control how the TI-84 Plus CE interprets expressions and displays
answers. Press zto switch between classic entries and MathPrint™ mode. This
guide focuses on MathPrint™ Mode, but may reference some classic entries.
MathPrint™ Mode
• If an expression exceeds one line, it may scroll off the screen (on the home screen
or the Y=screen). Press ~to see the entire expression.
Tip: Press the cursor without pressing yto move the cursor along the line.
• An arrow appears to the left of an answer if it scrolls off the screen. Press ~and
|before you enter another expression to display the entire answer.
Using the Keyboard 7
8 Using the Keyboard
Classic Entries MathPrint™
sqrt (5)
Some input areas in MathPrint™ mode only support classic entries.
Ex: y -
MathPrint™ (default)
Entry
Answer (Scrolls)
Entry
Answer
Scrolling Through the Home Screen History
If all lines of the display are full, text scrolls off the top of the display.
You can scroll up through previous entries and answers on the home screen, even if you
have cleared the screen. When you find an entry or answer that you want to use, you
can select it and paste it (press Í) on the current entry line.
Note: List and matrix answers cannot be copied and pasted to the new entry line.
However, you can copy the list or matrix command to the new entry line and execute
the command again to display the answer.
▶Press }or †to move the cursor to the entry or answer you want to copy and then
press Í.
The TI-84 Plus CE highlights the entry the cursor is on to help you select your
desired choice.
The entry or answer that you copied is automatically pasted on the current input
line at the cursor location.
Note: If the cursor is in a MathPrint™ expression, such as the denominator of a
fraction, press ƒ } to move the cursor out of the expression and then move
the cursor to the entry or answer you want to copy to that location in the
MathPrint™ template.
▶Press ‘or {to delete an entry/answer pair. After an entry/answer pair has
been deleted, it cannot be displayed or recalled again.
Returning to the Home Screen
To return to the home screen from any other screen, press y 5 until you get back
to home screen.
Status Bar
The status bar displays on all screens and gives information about the selected
calculator mode settings, any context help available for the item you currently have
selected and battery status.
The status bar may also show a busy indicator if the calculator is performing an
operation, Øto indicate the calculator is in alpha status and Þto indicate the
secondary function is active.
Selected mode settings are displayed on the top line of the status bar when the cursor
is in the active entry area. Mode settings do not display when the cursor is in the home
screen history, since the mode may have been different for previous calculations.
Using the Keyboard 9
10 Using the Keyboard
Tip:
Context help, if available, is displayed on the second line. The battery status icon, busy
indicator, alpha indicator and second key indicator are on the right. When you scroll
into the home screen history, the context help on the status bar displays HISTORY.
In the example below, the cursor is on the GridColour option. The context help for
how to change the GridColour using the spinner menu is displayed on the second line
of the status bar.
Selected MODE settings.
Context help for current cursor position or active feature.
Battery icon.
This area of the status bar also displays the busy indicator,
alpha indicator and second key indicator, depending on the state of the graphing
calculator.
Using Shortcut Menus
ƒ ^
Opens FRAC menu.
ƒ _
Opens FUNC menu.
ƒ `
Opens MTRX menu.
ƒ a
Opens YVAR menu.
ƒ b
Opens special menus.
Shortcut menus allow quick access to the following:
^Templates to enter fractions and to toggle between whole and mixed
fractions, and fractions and decimals.
_Selected functions from the MATH MATH and MATH NUM menus as you
would see them in a textbook, when in MathPrint™ mode. Functions include
absolute value, numeric differentiation, numeric integration, summation, log
base n, square root, permutations, combinations and factorials.
`Quick MathPrint™ matrix entry, when available.
aNames of function variables from the VARS Y-VARS menu.
To open a shortcut menu, press ƒplus the corresponding F-key: ^for FRAC, _
for FUNC, `for MTRX, afor YVAR or bfor special menus within interactive graph
activities, such as when using DRAW or Quick Plot and Fit Equation, and for TI-Basic
program editing.
To select a menu item:
-either-
▶Press the number corresponding to the item.
-or-
▶Use the arrow keys to move the cursor to the appropriate line and then press Í.
Using the Keyboard 11
12 Using the Keyboard
You can select all shortcut menu items except matrix templates using standard menus.
For example, you can choose the summation template from several places:
FUNC shortcut menu
ƒ _
y N
The shortcut menus are available to use where input is allowed. If the calculator is in
Classic mode or if a screen is displayed that does not support MathPrint™ display,
entries will be displayed in Classic mode. The MTRX menu is only available in
MathPrint™ mode on the home screen and in the Y=editor.
Note: Shortcut menus may not be available if ƒplus f-key combinations are used
while an application is running.
Display Cursors
The cursor may change to indicate what will happen when you press the next key or
when you select the next menu item to be pasted as a character.
Note: The second cursor Þand alpha cursor Ømay appear on the status bar,
depending on the context.
Cursor Appearance Effect of Next Keystroke
Entry Solid
rectangle
$
This is the default cursor. Enter characters at this
cursor; this overrides any existing character.
Insert Underline
__
Press y 6 for this cursor. Enter characters in
front of the cursor location.
Second Reverse
arrow
Þ
This allows you to enter a 2nd character or
complete a 2nd operation.
Alpha Reverse A
Ø
An alpha character is entered, SOLVE is executed or
shortcut menus are displayed.
Full Chequerboard
rectangle
No entry; the maximum characters are entered at
a prompt or memory is full. Also indicates the limit
of the allowed MathPrint™ mode levels.
MathPrint™ Right arrow The cursor moves to either the next part of the
template or out of the template. Press the right
arrow to move out of all MathPrint™ templates
before entering the remaining terms in an
expression.
If you press ƒduring an insertion, the cursor becomes an underlined A (A). If you
press yduring an insertion, the underlined cursors becomes an underlined #(#).
Note: If you highlight a small character such as a colon or a comma and then press
ƒor y, the cursor does not change because the cursor width is too narrow.
Using the Keyboard 13
14 Using the Keyboard
Working with Menus
You can access TI-84 Plus CE commands using menus.
Displaying a Menu
• When you press a key to display a menu, that menu temporarily replaces the
screen where you are working.
•Ex: press »to display the MATH menu.
• After you select an item from a menu, the screen where you are working usually
displays again.
Note: If a context help message is in the status bar when you press a menu that
temporarily replaces the screen, that context help will remain in the status bar as a
reminder that you are working within a context.
Moving from One Menu to Another
Some keys access more than one menu. When you press
such a key, the names of all accessible menus are
displayed on the top line. When you highlight a menu
name, the items in that menu are displayed. Press ~and
|to highlight each menu name.
Note: FRAC shortcut menu items are found in the FRAC
menu, and are also found on the MATH NUM menu. FUNC
shortcut menu items are also found on the MATH MATH
menu.
Scrolling a Menu
To scroll down the menu items, press †. To scroll up the menu items, press }.
To page down 9 menu items at a time, press ƒ †. To page up 9 menu items at a
time, press ƒ }.
To go to the last menu item directly from the first menu item, press }. To go to the
first menu item directly from the last menu item, press †.
Selecting an Item from a Menu
You can select an item from a menu in three ways.
▶Press the number or letter of the item you want to
select. The cursor can be anywhere on the menu, and
the item you select does not need to be displayed on
the screen.
-or-
▶Press †or }to move the cursor to the item you want, and then press Í.
-or-
▶Within the Catalog listing of functionality, move the
cursor to the item you want, and then press Ã. For
most commands, the Catalog Help syntax editor
displays the correct syntax. Enter the syntax using the
displayed help, and then press ƒ a to paste. The
Catalog Help pastes the complete command.
Press ƒ b to escape without pasting the
command.
Using the Keyboard 15
16 Using the Keyboard
Notes:
• After you select an item from a menu, the TI-84 Plus CE typically displays the
previous screen.
• If you do not see PASTE on the Catalog Help screen, press y 5 until you return
to the home screen, then repeat your actions. If this happens, it may mean the
screens were layered and the previous screen did not have an active cursor on an
input line to accept the pasting of the function or command.
Leaving a Menu without Making a Selection
You can leave a menu without making a selection in these two ways.
• Press y 5 to return to the home screen.
-or-
• Press ‘to return to the previous screen.
Using Menus
When you press a key or key combination to display a menu, one or more menu names
appear on the top line of the screen.
• The menu name on the left side of the top line is highlighted. Up to nine items in
that menu are displayed, beginning with item 1.
• A number or letter identifies each item’s place in the menu. The order is 1 through
9, then 0, then A, B, C. Once number and letter options are exhausted, the item
number or letter area will be blank. Select these items using the arrow keys.
• When the menu continues beyond the displayed items, a down arrow ($) replaces
the colon next to the last displayed item.
• When a menu item ends in an ellipsis (...), the item displays a secondary menu,
editor, or wizard when you select it.
• Use Catalog Help for more syntax help when needed. Select a menu item and then
press Ãto go to a syntax help editor (if the menu item is supported).
Working with MATH Menus
To display the MATH menus, press ». Press |or ~to display the menus for the
NUM (Number), CMPLX (Complex), PROB (Probability) or FRAC (Fraction) commands.
Note: Use Catalog Help for more syntax help when needed. Select a menu item and
then press Ãto go to a syntax help editor (if the menu item is supported).
MATH
To display the MATH menu, press ».
1: e4Frac Displays the answer as a fraction.
2: e4Dec Displays the answer as a decimal.
3: 3Calculates the cube.
4: 3‡( Calculates the cube root.
* 5: x‡Calculates the xth root.
6: fMin( Finds the minimum of a function.
7: fMax( Finds the maximum of a function.
* 8: nDeriv( Computes the numerical derivative of a function at a
point.
* 9: fnInt Computes the numerical integral of a function over
an interval.
* 0: summation G( Computes the sum of an expression over an index.
* A: logBASE( Computes the logarithm of a specified value
determined from a specified base: logBASE(value,
base).
B: piecewise( Allows the entry of piecewise functions.
C: Numeric Solver... Displays the equation solver.
* FUNC shortcut menu ƒ _
NUM
To display the NUM menu, press » ~.
* 1: abs( Absolute value
2: round( Round
3: iPart( Integer part
4: fPart( Fractional part
5: int( Greatest integer
6: min( Minimum value
7: max( Maximum value
8: lcm( Least common multiple
9: gcd( Greatest common divisor
0: remainder( Reports the remainder as a whole number from a
division of two whole numbers where the divisor is
not zero.
** A: e4 n/d e3 4 Un/d Converts an improper fraction to a mixed number or a
mixed number to an improper fraction.
** B: e4 Fe3 4 D Converts a decimal to a fraction or a fraction to a
decimal.
** C: Un/d Displays the mixed number template in MathPrint™
Using the Keyboard 17
18 Using the Keyboard
mode.
Displays a small u between the whole number and
fraction in Classic mode. Use n/d to complete the
mixed number.
** D: n/d Displays the fraction template in MathPrint™ mode.
Displays a thick fraction bar between the numerator
and the denominator in Classic mode.
Also accessible by pressing ƒ „.
* FUNC shortcut menu ƒ _
** FRAC shortcut menu ƒ ^
CMPLX
To display the CMPLX menu, press » ~ ~.
1: conj( Returns the complex conjugate.
2: real( Returns the real part.
3: imag( Returns the imaginary part.
4: angle( Returns the polar angle.
5: abs( Returns the magnitude (modulus).
6: e4Rect Displays the result in rectangular form.
7: e4Polar Displays the result in polar form.
PROB
To display the PROB menu, press » | |.
1: rand Random-number generator
* 2: nPr Number of permutations
* 3: nCr Number of combinations
* 4: ! Factorial
5: randInt( Random-integer generator
6: randNorm( Random # from Normal distribution
7: randBin( Random # from Binomial distribution
8: randIntNoRep( Random ordered list of integers in a range
* FUNC shortcut menu ƒ _
FRAC
To display the FRAC menu, press » |.
** 1: n/d Displays the fraction template in MathPrint™
mode.
Displays a thick fraction bar between the
numerator and the denominator in Classic mode.
Also accessible by pressing ƒ „.
** 2: Un/d Displays the mixed number template in
MathPrint™ mode.
Displays a small u between the whole number
and fraction in Classic mode. Use n/d to
complete the mixed number.
** 3: e4 Fe3 4 D Converts a decimal to a fraction or a fraction to a
decimal.
** 4: e4 n/d e3 4 Un/d Converts an improper fraction to a mixed number
or a mixed number to an improper fraction.
** FRAC shortcut menu ƒ ^
Using the Keyboard 19
20 Setting Up the Calculator Modes
Setting Up the Calculator Modes
Mode settings control how the calculator displays and interprets:
• Answers
• Elements of lists and matrices
• Graphs
• Language settings
• Numbers
Setting Modes
To set calculator modes, press z.
The following menu appears on your screen:
Note: When you press z, the cursor is on NORMAL by
default. Press }to switch between MathPrint™ and
Classic modes.
Note: The Constant Memory™ feature retains mode settings when the unit is turned
off.
Changing Mode Settings
To change mode settings, follow these steps:
1. Press †or }to move the cursor to the line of the setting that you want to
change.
2. Press ~or |to move the cursor across the line to the desired setting.
3. Press Íto select a setting.
Exception: LANGUAGE Press ~or |to select a loaded language. Press †or }to
set the selected language.
Note: The second line of the status bar displays context help with a description of line
modes.
Mode Description
MATHPRINT CLASSIC Controls whether inputs and outputs
on the home screen and in the Y=
editor are displayed as they are in
textbooks
NORMAL SCI ENG Numeric notation
Mode Description
FLOAT 0 1 2 3 4 5 6 7 8 9 Number of decimal places in answers
RADIAN DEGREE Unit of angle measure
FUNCTION PARAMETRIC POLAR SEQ Type of graphing
THICK DOT-THICK THIN DOT-THIN Resets all Y= line styles
SEQUENTIAL SIMUL Whether to plot sequentially or
simultaneously
REAL a+bi re^(qi) Real, rectangular complex or polar
complex
FULL HORIZONTAL GRAPH-TABLE Full screen, two split-screen modes
FRACTION TYPE: n/d Un/d Displays results as simple fractions or
mixed fractions
ANSWERS: AUTO DEC Controls the format of the answers
STAT DIAGNOSTICS: OFF ON Determines which information is
displayed in a statistical regression
calculation
STAT WIZARDS: ON OFF Determines if syntax help prompts are
provided for optional and required
arguments for many statistical,
regression and distribution commands
and functions
SET CLOCK Sets the time and date
LANGUAGE: ENGLISH Sets the display language
MATHPRINT™ CLASSIC
MATHPRINT™mode displays most inputs and outputs the way they are shown in
textbooks, such as and .
CLASSIC mode displays expressions and answers as if written on one line, such as 1/2 +
3/4. (Fraction bars appear as thick lines. A division operation will appear as a thin slash
mark.)
Note:
• Some areas in MATHPRINT™ mode display in classic (one line) formats.
• If you switch between these modes, most entries (except matrix calculations) will
be preserved.
Setting Up the Calculator Modes 21
22 Setting Up the Calculator Modes
NORMAL SCI ENG
Answers are displayed in standard formats when the calculation or setting forces a
decimal result on the calculator.
Notation for 12345.67 Decimal answer displays as:
NORMAL
12345.67
Retains the decimal notation up to limits
of the calculator display and memory.
12345.67
SCI (Scientific)
1.234567 x 104
One digit to the left of the decimal with
the appropriate power of 10 to the right
of *â.
1.234567â4
ENG (Engineering)
12.34567 x 103
Up to three digits before the decimal and
the power of 10 (to the right of â) is a
multiple of three.
12.34567â3
Note:
*This âin the display stands for "x10" and the number entered after âbecomes the
power of 10.
The keypad contains y D, which displays as âon the calculator. The calculator
notation, â, designates the "x10" part of the number without using extra parentheses.
The calculator then follows the order of operations as expected when using SCI or
ENG notation. This notation, â, is not typically accepted on homework and exams, and
written results should use the standard notation, for example, the 1.234567 x 104.
If you select NORMAL notation, but the answer cannot display in 10 digits (or the
absolute value is less than .001), the TI-84 Plus CE expresses the answer in scientific
notation.
FLOAT 0 1 2 3 4 5 6 7 8 9
FLOAT (floating) decimal mode displays up to 10 digits, plus the sign and decimal.
FLOAT will display in the status bar.
Selecting 0123456789 specifies the number of digits (0 through 9) to display to the
right of the decimal for decimal answers. FIX# will display in the status bar.
The decimal setting applies to NORMAL, SCI, and ENG notation modes.
The decimal setting applies to these numbers, with respect to the ANSWER mode
setting:
• An answer displayed on the home screen
• Coordinates on a graph
• The Tangent( DRAW instruction equation of the line, x, and dy/dx values
• Results of calculated operations
• The regression equation stored after the execution of a regression model
RADIAN DEGREE
Angle modes control how the calculator interprets angle values in trigonometric
functions and polar/rectangular conversions. The RADIAN or DEGREE setting will
display in the status bar.
RADIAN mode interprets angle values as radians. Answers display in radians.
DEGREE mode interprets angle values as degrees. Answers display in degrees. Polar
complex number arguments are always interpreted in radians.
FUNCTION PARAMETRIC POLAR SEQ
Graphing modes define the graphing parameters.
FUNCTION graphing mode plots functions, where Y is a function of X.
PARAMETRIC graphing mode plots relations, where X and Y are functions of T.
POLAR graphing mode plots functions, where ris a function of q.
SEQUENCE graphing mode plots sequences. Three sequences are available: u, v and w,
with an option of the independent variables of n, n+1 and n+2.
THICK DOT-THICK THIN DOT-THIN
Line Style: Graphs as:
THICK Thick line style (default). More pixels displayed around a
plotted point (pixel). Equivalent to CONNECTED on earlier
TI-84 Plus calculators.
DOT-THICK Large dot plotting. (3x3 pixels). Equivalent to DOT on earlier
TI-84 Plus calculators.
THIN Thin line style (graphing per pixel). Use THIN for functions
Setting Up the Calculator Modes 23
24 Setting Up the Calculator Modes
whose graph has an axis as an asymptote or for any
plotting where a more detailed view of the graph is needed
as compared to THICK.
DOT-THIN DOT display is 1 pixel per dot graphed. Use DOT-THIN for
functions whose graph has an axis as an asymptote or for
any plotting where a more detailed view of the graph is
needed as compared to DOT-THICK.
Note:
• You can change individual line styles in the Y= editor.
• Setting a line style plotting mode sets all Y= line styles to the selected style.
SEQUENTIAL SIMUL
SEQUENTIAL graphing-order mode evaluates and plots one function completely before
the next function is evaluated and plotted.
SIMUL (simultaneous) graphing-order mode evaluates and plots all selected functions
for a single value of X and then evaluates and plots them for the next value of X.
Note: Regardless of which graphing mode is selected, the calculator will sequentially
graph all stat plots before it graphs any functions.
REAL a+bire^(theta i)
REAL mode does not display complex results unless complex numbers are entered as
input.
Two complex modes display complex results.
•a+bi(rectangular complex mode) displays complex numbers in the form a+bi. The
TI-84 Plus CE supports the n/d fraction template.
•re^(qi) (polar complex mode) displays complex numbers in the form
re^(qi).
FULL HORIZONTAL GRAPH-TABLE
FULL screen mode uses the entire screen to display a graph. Each split-screen mode
displays two screens simultaneously.
•HORIZONTAL mode displays the current graph on the top half of the screen and
most other calculator features on the bottom half.
•GRAPH-TABLE mode displays the current graph on the left half of the screen and
plotted lists on the right half.
Horizontal Graph-Table
FRACTION TYPE: n/d Un/d
n/d displays results as a simple fraction. Fractions may contain a maximum of six
digits in the numerator; the value of the denominator may not exceed 9999.
Un/d displays results as a mixed number, if applicable. U, n, and dmust be all be
integers. If Uis a non-integer, the result may be converted U n/d. If nor dis a non-
integer, a syntax error is displayed. The whole number, numerator, and denominator
may each contain a maximum of three digits.
ANSWERS: AUTO DEC
AUTO displays answers in a similar format as the input. For example, if a fraction is
entered in an expression, the answer will be in fraction form, if possible. If a decimal
appears in the expression, the output will be a decimal number.
DEC displays answers as integers or decimal numbers.
Note: The ANSWERS mode setting also affects how values in sequences, lists, and
tables are displayed. You can also convert values from decimal to fraction or fraction to
decimal using }FRAC,}DEC, and }F| }Dlocated in the FRAC shortcut menu or the MATH
submenu.
STAT DIAGNOSTICS: OFF ON
OFF displays a statistical regression calculation without the correlation coefficient (r)
or the coefficient of determination (r2).
ON displays a statistical regression calculation with the correlation coefficient (r), and
the coefficient of determination (r2), as appropriate.
Setting Up the Calculator Modes 25
26 Setting Up the Calculator Modes
STAT WIZARDS: ON OFF
ON: Selection of menu items in MATH PROB, STAT, CALC, DISTR DISTR, DISTR DRAW and
seq( in LIST OPS displays a screen which provides syntax help (wizard) for the entry of
required and optional arguments into the command or function. The function or
command will paste the entered arguments to the Home Screen history or to most
other locations where the cursor is available for input. Some calculations will compute
directly from the wizard. If a command or function is accessed from Nthe
command or function will paste without wizard support.
If no wizard is available, use Catalog Help for more syntax help when needed. To use
Catalog Help, select a menu item and then press Ã.
OFF: The function or command will paste to the cursor location with no syntax help
(wizard).
SET CLOCK
Use the clock to set the time and date, select the clock display format, and turn the
clock on and off. The clock is turned on by default and is accessed from the mode
screen.
Displaying the Clock Settings
1. Press z.
2. Press }}}to move the cursor to SET
CLOCK.
3. Press Íto change clock settings.
Note: You may have to reset the clock if your battery power runs out.
See education.ti.com for future updates on the battery and battery preservation features.
Turning the Clock On and Off
1. Press y N.
2. Press †or }to scroll the CATALOG until the selection
cursor points to ClockOff or ClockOn.
3. Press Í Í.
LANGUAGE
Press ~or |on the LANGUAGE spinner menu to select a loaded language. Press †
or }to set the selected language.
Note:
• The calculator will retain your language setting for most resets of the calculator.
• The LANGUAGE spinner menu will only display Language Apps loaded on the
calculator. Check education.ti.com for all available languages. Use
TI Connect™ CE to load files to your calculator.
Using the Special Character Set
After you select your desired language, a new item (CHARACTER) is added to the
TI-84 Plus CE CATALOG. This item accesses special characters and accent marks used in
the language that you chose for localization. You can use these special characters and
accent marks for display messages and text strings that you want to store to a
variable. You cannot, however, use them in variable names.
1. Press yNto display the
CATALOG.
Note:CHARACTER is always the first
item in the CATALOG.
2. Press Íto display the CHARACTER
screen.
Accent marks appear in the menus at
the bottom of the screen.
3. You can:
• Select a special character:
a) Press |,~,†, or }to move the box to the special character that you want
to use in a message or text string.
b) Press Íto place the character on the edit line.
c) Press |,~,†, or }to move the box to Done.
d) Press Íto paste the contents of the edit line to the previous screen.
-or-
• Add an accent mark to a character:
a) Press the function key (^,_,`,a, or b) immediately above the accent
mark to select it. The ALPHA uppercase mode is automatically turned on. To
change to lowercase, press ƒ.
b) Press the key associated with the alpha character that you want to accent, for
example, [A] (above »). The accented character is displayed in the edit
line.
c) Press |,~,†, or }to move the box to Done.
d) Press Íto paste the contents of the edit line to the previous screen.
Setting Up the Calculator Modes 27
28 Evaluating Expressions
Evaluating Expressions
An expression is a group of
• numbers,
• variables,
• functions and their arguments,
-or-
• a combination of these elements.
An expression evaluates to a single answer.
On the TI-84 Plus CE, you enter an expression in the same order as you would write it
on paper. For example: pR2is an expression.
Order of Operations
The TI-84 Plus CE uses an order of operations system called Equation Operating System
(EOS™), which
• defines the order in which functions in expressions are entered and evaluated
-and-
• allows you to enter numbers and functions in a simple, straightforward sequence.
EOS™ evaluates the functions in an expression in this order:
Order Function
1 Functions that precede the argument, such as sin( or log(
2 Functions that are entered after the argument, such as 2, -1, !, ¡, r, and
conversions
3Powers and roots, such as 25or
4 Permutations (nPr) and combinations (nCr)
5 Multiplication, implied multiplication, and division
6 Addition and subtraction
7 Relational functions, such as > or
8 Logic operator and
9 Logic operators or and xor
Note: Within a priority level, EOS™ evaluates functions from left to right. Calculations
within parentheses are evaluated first. A number in scientific or engineering notation,
2.34â6, is interpreted as (2.3x106) with parentheses so the number remains the correct
value during the EOS™ calculation.
Implied Multiplication
The TI-84 Plus CE recognises implied multiplication, so you do not need to press ¯to
express multiplication in all cases. For example, the TI-84 Plus CE interprets 2p,
4sin(46),5(1+2) and (2ä5)7 as implied multiplication.
Note: TI-84 Plus CE implied multiplication rules differ from those of some other
graphing calculators. For example:
Expression TI-84 Plus CE
evaluates as
Other Calculators
may evaluate as
1à2X (1à2)X 1à(2X)
Parentheses
The TI-84 Plus CE completes all calculations inside a pair of parentheses first. For
example, in the expression 4(1+2), EOS™ first evaluates the portion inside the
parentheses, 1+2, and then multiplies the answer, 3, by 4.
Negation
To enter a negative number, use the negation key. Press kand then enter the
number. On the TI-84 Plus CE, negation is in the third level in the EOS™ hierarchy.
Functions in the first level, such as squaring, are evaluated before negation.
Example: MX2, evaluates to a negative number (or 0). Use parentheses to square a
negative number.
Note: Use the jkey for subtraction and the kkey for negation. If you press jto
enter a negative number, as in 9¯¹7, or if you press kto indicate subtraction, as
in 9k7, an error occurs. If you press ƒAk ƒ B, it is interpreted as implied
multiplication (A)(MB).
Evaluating Expressions 29
30 Evaluating Expressions
Entering Expressions and Instructions
You can use an expression on the home screen to calculate an answer. In most places
where a value is required, you can use an expression to enter a value.
Expressions evaluate to the
(approximate) decimal display
(
Entering an Expression
To create an expression, you enter numbers, variables and functions using the keyboard
and menus. An expression is evaluated when you press Í, regardless of the cursor
location. The entire expression is evaluated according to EOS™ rules and the answer is
displayed according to the mode setting for Answer.
Most TI-84 Plus CE functions and operations are symbols comprising several
characters. You must enter the symbol from the keyboard or a menu; do not spell it
out. For example:
• To calculate the log of 45, you must press «45. Do not enter the letters L,Oand
G. If you enter LOG, the TI-84 Plus CE interprets the entry as implied multiplication
of the variables L,Oand G.
• When working with matrices, do not type the individual keys for [, A and ]. Use the
NAMES menu in y ¾ to paste the matrix name [A] to the cursor position.
Calculate 3.76 P(L7.9 + ‡5) + 2 log 45.
MathPrint™ Classic
3Ë76 ¥£k7Ë9Ã y C 5~ ¤
Ã2«45 ¤ Í
Note: The ~is a notable keystroke
difference as compared to Classic.
3Ë76 ¥£k7Ë9Ã y C 5¤
¤ Ã 2«45 ¤ Í
Note: In MathPrint™ mode, press ~to get out of the MathPrint™ template and
continue entering the expression.
Multiple Entries on a Line
To enter two or more expressions or instructions on a line, separate them with colons
(ƒ m). All instructions are stored together in last entry y [.
Entering a Number in Scientific Notation
1. Enter the part of the number that precedes the exponent. This value can be an
expression.
2. Press y D.âis pasted to the cursor location.
3. Enter the exponent, which can be one or two digits.
Notes:
• If the exponent is negative, press k, and then enter the exponent.
•âstands for "x10" and the calculator interprets the entire number as (123.45 x 10-
2) as if it was entered with parentheses.
When you enter a number in scientific notation, the TI-84 Plus CE does not
automatically display answers in scientific or engineering notation. The mode settings
and the size of the number determine the display format.
Functions
A function returns a value. For example, log( and sin( are functions. In general, the first
letter of each function is lowercase. Most functions take at least one argument, as
indicated by an open parenthesis following the name. For example, sin( requires one
argument, sin (value).
Note: To see the arguments of a function or command in the calculator, find the item
in a menu or y N and press +. For most menu items, a Catalog Help screen will
display and the syntax of the arguments will be displayed.
Instructions
An instruction (command) initiates an action on the calculator. For example, ClrDraw is
an instruction to the calculator to clear drawn elements from a graph. Instructions
cannot be used in expressions. In general, the first letter of each instruction name is
uppercase. Some instructions take more than one argument, as indicated by an open
parenthesis at the end of the name. For example, on the TI-84 Plus CE, Circle( requires
three arguments, and has two optional arguments:
Circle(X,Y,radius[,color,linestyle])
Evaluating Expressions 31
32 Evaluating Expressions
Interrupting a Calculation
To interrupt a calculation or graph in progress, which is indicated by the busy indicator
in the status bar, press É.
When you interrupt a calculation, a menu is displayed.
• To return to the home screen, select 1:Quit.
• To go to the location of the interruption, select 2:Goto.
When you interrupt a graph, a partial graph is displayed.
• To return to the home screen, press ‘or any non-graphing key.
• To restart graphing, press a graphing key or select a graphing instruction.
TI-84 Plus CE Edit Keys
Keystrokes Result
~or |• Moves the cursor within an expression; these keys repeat if held down
on the keypad.
}or †• Moves the cursor from line to line within an expression that occupies
more than one line; these keys repeat if held down on the keypad.
• Moves the cursor from term to term within an expression in
MathPrint™ mode; these keys repeat if held down on the keypad.
• On the home screen, scrolls through the history of entries and
answers.
y | • Moves the cursor to the beginning of an expression.
y ~ • Moves the cursor to the end of an expression.
ƒ } • Moves the cursor out of a MathPrint™ expression and up into history
on the home screen.
• Moves the cursor from a MathPrint™ expression to the previous Y-var
in the Y=editor.
ƒ † • Moves the cursor from a MathPrint™ expression to the next Y-var in
the Y=editor.
Í• Evaluates an expression or executes an instruction.
‘• Clears the current line on a line with text on the home screen.
• Clears everything on the home screen on a blank line on the home
screen. This does not clear the history of your entries and answers.
• Press }to see the history.
• Use Clear Entries* followed by ‘if you wish to delete all home
screen entries.
*Clear Entries is found in N.
• Clears the expression or value where the cursor is located in an editor;
it does not store a zero.
{• Deletes a character at the cursor; this key repeats if held down on the
keypad.
Keystrokes Result
y { • Changes the cursor to an underline (__); inserts characters in front of
the underline cursor; to end insertion, press y 6 or press |,},
~or †.
y• Changes the cursor or status bar indicator to Þ; the next keystroke
performs a 2nd function (displayed above a key and to the left); to
cancel 2nd, press yagain.
ƒ• Changes the cursor or status bar indicator to Ø; the next keystroke
performs a third function of that key (displayed above a key and to the
right) or accesses a shortcut menu. To cancel ƒ, press ƒor
press |,},~or †.
y
7
• Changes the cursor to Ø; sets alpha-lock; subsequent keystrokes
access the third functions of the keys pressed; to cancel alpha-lock,
press ƒ. If you are prompted to enter a name such as for a group
or a program, alpha-lock is set automatically.
Note: The TI-84 Plus CE does not automatically set alpha-lock for entries
that require list names.
„• Pastes an X in Function mode, a T in Parametric mode, a qin Polar
mode or an nin Seq mode with one keystroke.
ƒ
„
• Pastes the n/d template at the cursor position.
Evaluating Expressions 33
34 Working with Graphs
Working with Graphs
This section covers how to change color options on a graph, how to draw points on a
graph, and how to insert an image as a background on a graph.
Using Colour on the TI-84 Plus CE
The TI-84 Plus CE graphing calculator has many colour options and a high resolution
display that allows more information to be shown on the screen. The TI-84 Plus CE
uses colour in the following ways:
• Y= editor for line colour.
• DRAW commands for line colour, such as vertical lines, circles and text on the
graph screen.
• The graph format screen for grid, axes or border colour and applying a background
image or colour.
• Statistical Plots.
Colour options for various features are accessed via a spinner menu. With the cursor on
a colour selection for a feature, use the |or ~to change the colour. When the cursor
is on any spinner menu, the context help in the status bar frequently displays the hint:
PRESS [<] OR [>] TO SELECT AN OPTION.
Note: Take care to choose appropriate colour combinations for the graph areas so that
all features are visible.
Resetting Colour Options to Default
• With the cursor on a function in [Y=], press ‘‘to return to the default
colour and line style for that function.
• You can reset the calculator to its default settings, including colour settings, by
pressing y L 722.
Using Colour on the Graph Screen
The examples below show how to set up the graph of a function. Here, the mode is set
to FUNCTION and the default settings are assumed.
Enter an equation in the Y= editor.
1. Press o.
2. Press k „ ¡ Ã 6.
To set the line colour in the Y= editor:
1. Press |to highlight the colour and line style indicator.
2. Press Í.
The spinner dialogue displays. Notice the second line in
the status bar, which displays hints.
3. Press ~~~to place the cursor box on the colour
and line style at the left of the screen and press Í.
4. Press ~~~to select MAGENTA.
5. Press †.
Note: The thick line style is the default. It can be changed by pressing |or ~.
6. Press †to highlight OK and then press Í.
To set a Background Image:
1. Press y ..
Set GridColour, Axes and BorderColour as desired.
2. Press }or †as necessary to highlight Background.
The spinner menu becomes active.
3. Press |or ~to select the desired Background Image or colour.
Note: Your Image Vars may be different than the one displayed.
Note: To create Background Image Vars, use the free TI Connect™ CE software to
convert and send images to your TI-84 Plus CE graphing calculator.
4. Press rto see the graph and trace points.
Note: You can manipulate the graph to “fit” an object in
the Background Image Var. You can also use QuickPlot and
Fit Equation to fit an equation to a shape. (See QuickPlot.)
Using QuickPlot and Fit Equation
QuickPlot and Fit Equation allows you to drop points on a graph screen and model a
curve to those points using regression functions. You can select color and line style,
draw points on a graph, and choose an equation to fit the drawn points. You can then
store the results of the plot and equation.
QuickPlot and Fit Equation is an option in the …CALC menu.
Prior to starting the QuickPlot and Fit Equation interactive feature on the graph area,
be sure to set your Background Image Var and other graph settings from the FORMAT
screen. Also set your WINDOW or ZOOM settings.
Working with Graphs 35
36 Working with Graphs
Drop points on the screen.
Points can be saved to
lists.
Calculate the regression
equation, draw the curve, and
store the function.
Working With Images
The TI-84 Plus CE uses both pictures and background images. They are both stored in
Flash archive, but they are used in different ways.
Using Pictures and Backgrounds
• Image Vars (Image1 - Image9, and Image0) are variables stored in archive
memory. An Image Var is used as a Background Image in the graph area. Several
images are pre-loaded on the TI-84 Plus CE. You can also convert images to
TI-84 Plus CE Image Vars in the TI Connect™ CE software and load them to the
calculator. You cannot create images on the calculator.
Note: TI Connect™ CE software is available as a free download from
education.ti.com/go/download.
• Pic Vars (Pic1 - Pic 9, and Pic0) are also variables stored in archive memory. Pic
Vars can be created by drawing in the graphing area, and the changes saved and
recalled to the graphing area. Saving a Pic Var will not include the Background
Image behind your graphing area.
• Both Image Vars and Pic Vars are stored and run in Flash archive, not in RAM. They
are both accessible in the VARS menu.
• Image Vars and Pic Vars can only be shared with another TI-84 Plus CE or TI-84 C
graphing calculator.
• TI-84 Plus Pic Vars cannot be shared between the TI-84 Plus and the TI-84 Plus CE
graphing calculators.
• If you perform a RAM reset on the TI-84 Plus CE, the Image Vars and Pic Vars
remain in Archive memory for use.
Using Piecewise Function Graphing
How to enter a piecewise function
1. Press ».
2. Press }or †to scroll to B:piecewise(.
3. Press Í.
4. Press |or ~to select the number of
pieces (1-5) for the function.
5. Press † Í to select OK.
6. Enter functions in the oeditor.
7. Press q6:ZStandard to set the standard
window and graph.
Conditions Menu y :
The CONDITIONS menu, y : | pastes several characters at once in the condition
part of the piecewise template for quicker entry.
Note: The piecewise conditions are entered using the relations found in y :
(above »). These relations are typically used for True(1)/False(0) testing in
programming on the calculator.
Special Information when using intervals in the condition part of the piecewise
template:
Textbook format for an interval, such as -2 {X{5, is allowed only when entered
directly in the condition part of the piecewise template in the calculator. Do not use
this format in other locations in the calculator for the same interval interpretation.
Note that if an interval form is selected from the CONDITIONS menu, the interval form
will paste in the correct logical format for an interval as, for example, -2 +X and X +5.
This is the correct format for all features in the calculator to give the expected logical
test result True(1)/False(0) and will also give the correct X interval in piecewise
graphing.
Note:
• Overlapping intervals: The graph is plotted from left (Xmin) to right (Xmax). For
each value of X from left to right, the calculator looks for the first valid expression
to calculate the Y value. Overlapping intervals are allowed and will be graphed
according to the first valid expression that can be computed for an X value.
Working with Graphs 37
38 Working with Graphs
Tips
• Once a piecewise template is selected with a certain number of pieces, you will
not be able to add or delete a piece. You may select a larger number of pieces and
enter zeros (False) to have placeholder rows. This is helpful when creating
drawings using functions on the graph screen.
• The piecewise function uses one MathPrint™ level out of a maximum of four. You
may see the chequerboard cursor ( ) when you enter a function in the template,
but that function is allowed if entered outside of a piecewise template. To keep
the maximum number of MathPrint™ levels desired, enter the function in another
YVar, such as Y3 and then use Y3 in the piecewise template.
• You can enter a function from the Home Screen. You can use this method to enter
a "tall" function with many pieces. For example, "2X"!Y1:
• You can edit or view a function from oon the home screen if needed and store
the function back to o. Remember the format, "2X"!Y1.
- Quote: ƒ W
- Recall the YVar: y K ƒ a (select a YVar) and Í
- Close quote and store: ƒ W ¿
- Select the YVar: ƒ a and Í
Working with Tables
When a function is entered in the Y= editor, you can view a table of values by pressing
y 0.
Note: The table setup, y -, determines how table values are displayed. Check
the table setup values if the table results are not in expected format of fraction. Using
a mix of decimal and fractions will not retain fractions.
Working with Graphs 39
40 Working with Matrices
Working with Matrices
You can enter matrices using the matrix editor on your graphing calculator. For
example, you can perform the following operations on matrices:
• Addition
• Division
• Elementary Row Operations
• Inverses
• Multiplication
• Subtraction
Using the Matrix Editor
1. Press y ¾.
2. Press ~to navigate to the EDIT submenu.
3. Select from one of 10 allowed matrix variable names [A] – [J].
4. Enter the dimension of the matrix, then enter values in each matrix cell.
Note: Once in the editor, use the arrow keys to navigate between cells.
Example:
Matrix [C] as a 3x3 matrix is now in memory.
Performing a Calculation with a Matrix
1. Press y 5 to go to the Home Screen.
2. Press y ¾ use the MATH submenu to select a matrix command.
3. Use the NAMES submenu to paste the matrix name.
Note: A matrix name, such as [C], is a special character and can ONLY be pasted
for a calculation from the y ¾ NAMES menu and not typed from the
calculator keypad.
Example:
To find the determinant of [C] as entered above:
▶Use the y ¾ MATH menu to paste the
- 1: det(command
-and-
-y ¾ NAMES 3: [C]
as matrix variables to the Home Screen.
Note: Remember that you cannot type in a matrix name from the calculator keypad.
Use the y ¾ NAMES menu to paste a matrix name.
Working with Matrices 41
42 Working with Probability and Statistics
Working with Probability and Statistics
This section covers probability and statistics commands.
• Probability commands deal with random numbers, which are generated by
algorithms on the calculator.
• Statistics commands allow you to create lists of data, then plot or analyze that
data.
Working with Probability
You can find probability features in the »PROB submenu.
Many probability features have Stat Wizards to help you enter the syntax.
Example:
To generate a set of five random integers between 10 and 25 (inclusive):
1. Press », then press ~until you highlight PROB.
2. Press †until you highlight 5: randInt(, then Í.
3. Enter the lower integer, then Í.
4. Enter the upper integer, then Í.
5. Enter the number of integers (n), then Í.
6. Press Íto Paste.
7. Press Íagain to see the random set of integers.
Note:
• With each rand execution, the TI-84 Plus CE generates the same random-number
sequence for a given seed value. The TI-84 Plus CE factory-set seed value for rand
is 0. To generate a different random-number sequence, store any nonzero seed
value to rand. To restore the factory-set seed value, store 0 to rand or reset the
defaults by going to y L 7:Reset... 2:Defaults....
• The seed value also affects randInt(,randNorm( and randBin( instructions.
Working with Statistics
You can find statistics commands in the …menu. You can create lists of data, then
plot or analyse that data using the statistics commands.
You can use the following statistics functions:
Description Keys
Best fit equations (regressions) … ~ } †
Define and store up to three stat plot definitions y ,
Distributions y =
List-based statistical analysis y 9 ~ ~
Logistic and sine regression analysis … ~ } †
One- and two-variable analysis … ~ À and … ~ Á
Statistical tests … ~ ~
Inferential Statistics
You can perform 16 hypothesis tests and confidence intervals and 15 distribution
functions. You can display hypothesis test results graphically or numerically.
To enter lists of data:
1. Press ….
2. Select 1: Edit in the EDIT submenu, then Í.
Working with Probability and Statistics 43
44 Working with Probability and Statistics
3. Enter your data into list columns.
Note: Once in the list editor, use the arrow keys to enter the data in the lists. L1 – L6
are built-in list names. Custom list names can be created by scrolling to a blank list
name and pressing Í.
To plot this data:
4. Press y ,.
5. Press 1: Plot1 (to set up a scatter plot for L1 and L2), then Í.
6. Press |to highlight On.
7. Press qto automatically set up a graphing window for your data.
8. Press 9: ZoomStat to see the graph.
9. Press rand arrow keys to trace on the plot.
You can plot your statistics data in these ways:
• Scatter plot
• xyLine
• Histogram
• Regular or Modified box-and-whisker plot
• Normal probability plot
To find the two variable statistics for L1 and L2:
1. Press ….
2. Press ~to highlight CALC.
3. Press †until you highlight 2:2-Var Stats, then Í.
4. Press †until you highlight Calculate, then Í.
▶The screen will display the variable statistics.
Working with Probability and Statistics 45
46 Working with Probability and Statistics
Note: Most common probability and statistics commands will have a wizard to
prompt for syntax (values). The built-in Catalog Help is also available by pressing
the Ãkey on most menu items. This opens an editor to help you fill in the syntax
(values) needed in a calculation.
Working with Variables
You can enter and use several types of data, including real and complex numbers,
matrices, lists, functions, stat plots, graph databases, graph pictures, and strings.
Using Variable Names
Variables and Defined Items
You can enter and use several types of data, including real and complex numbers,
matrices, lists, functions, stat plots, graph databases, graph pictures and strings.
The TI-84 Plus CE uses assigned names for variables and other items saved in memory.
For lists, you also can create your own five-character names.
Variable Type Names
Real numbers
(including fractions)
A,B,... ,Z,q
Complex numbers A,B,... ,Z,q
Matrices ãAä,ãBä,ãCä,... ,ãJä
To enter a matrix name:
Press y ¾.
The Matrix Names menu appears.
Press the number on the keypad that corresponds with the
desired Matrix Name.
Ex: Press 1 for [A] as shown below.
Lists* L1,L2,L3,L4,L5,L6 and user-defined names
Functions Y1,Y2,... ,Y9,Y0
Parametric
equations
X1T and Y1T,... ,X6T and Y6T
Polar functions r1,r2,r3,r4,r5,r6
Sequence functions u,v,w
Stat plots Plot1, Plot2, Plot3
Working with Variables 47
48 Working with Variables
Variable Type Names
Graphical databases GDB1,GDB2,... ,GDB9,GDB0
Save current equations from Y= and Window settings to
re-use.
Background images Image1,Image2,... ,Image9,Image0
Pictures Pic1,Pic2,... ,Pic9,Pic0
Strings Str1,Str2,... ,Str9,Str0
Apps Applications
AppVars Application variables
Groups Grouped variables
Save a group of allowed calculator files for sharing or to
re-use when setting up a classroom.
System variables Xmin,Xmax and others
* Once a list contains a complex number, it is designated as a complex list. To change
a list to Real numbers, delete the list and enter the Real values.
Notes about Variables
• You can create as many list names as memory will allow.
• From the home screen or from a program, you can store to matrices, lists, strings
and system variables such as Xmax,TblStart and all Y= functions.
• From an editor, you can store to matrices, lists and Y=functions.
• From the home screen, a program or an editor, you can store a value to a matrix
element or a list element.
• You can use DRAW STO menu items to store and recall Pic Vars.
• Although most variables can be archived, system variables including r, T, X, Y and q
cannot be archived.
Note: In TI-Basic programming, it is best practice to avoid using these system
variables to avoid unexpected changes in the variable value due to calculations and
graphing when executing a program.
•Apps are independent applications, which are stored in Flash archive. AppVars is a
variable holder used to store variables created by independent applications. You
cannot edit or change variables in AppVars unless you do so through the application
that created them.
Storing Variable Values
Values are stored to and recalled from memory using variable names. When you
evaluate an expression that contains a variable name, the graphing calculator
substitutes the value currently stored in that variable.
To store a value to a variable from the home screen or a program using the ¿key,
begin on a blank line and follow these steps.
1. Enter the value you want to store. The value can be an expression.
2. Press ¿.
!is copied to the cursor location.
3. Press ƒand then the letter of the variable to which you want to store the value.
4. Press Í. The graphing calculator evaluates the expression and stores the value
to the variable.
Displaying a Variable Value
To display the value of a variable, enter the variable name on a blank line on the home
screen, and then press Í.
Archiving Variables (Archive, Unarchive)
You can store variables in the TI-84 Plus CE user data archive, a protected area of
memory separate from RAM. The user data archive lets you:
• Store data, programs, applications or any other variables to a safe location where
they cannot be edited or deleted inadvertently.
• Create additional free RAM by archiving variables.
By archiving variables that you do not need to edit frequently, you can free up RAM for
applications that may require additional memory.
The graphing calculator places an asterisk (ä) to the left of archived variables in most
menus as well as in y L 2:Mem Management. You cannot edit or execute
archived variables in CE OS Version 5.2 or earlier. In CE OS Version 5.3 and later, you
can execute programs if they are stored in an archive. If needed, you can use the
Archive/UnArchive commands to manage the memory location.
Example:
If you archive a list named L1, you will see that it exists in memory. However, if you
select and paste the name L1 to the home screen, it will not appear on the home
screen. You must unarchive it in order to see its contents and edit it.
Working with Variables 49
50 Working with Variables
Note: Image Vars are run and stored in archive, but when an Image Vars displays in
VARS 4:Picture & Background, the BACKGROUND menu does not display the asterisk *.
Recalling Variable Values
To recall and copy variable contents to the current cursor location, follow these steps.
To leave Rcl, press ‘.
1. Press y K.Rcl and the edit cursor are displayed on the bottom line of the
screen.
2. Enter the name of the variable in one of the following ways:
• Press ƒand then the letter of the variable.
• Press y 9, and then select the name of the list, or press y d or e,
and so forth.
• Press y ¾, and then select the name of the matrix.
• Press ½to display the VARS menu or ½ ~ to display the VARS Y-VARS
menu; then select the type and then the name of the variable or function.
• Press ƒ a to display the YVAR shortcut menu, then select the name of the
function.
The variable name you selected is displayed on the bottom line and the cursor
disappears.
3. Press Í. The variable contents are inserted where the cursor was located
before you began these steps.
Notes:
• You can edit the characters pasted to the expression without affecting the
value in memory.
• You can use Rcl in the Y= editor to paste a current function to a new YVar to
avoid retyping long expressions.
Solving Equations
Press » } to access C:Numeric Solver....
Numeric Solver
1. Enter an equation as expression 1=expression 2 (E1=E2).
You may enter more than one variable, but you will have to select one variable to
solve. The other variables used will take on the value stored in the calculator.
2. Press OK.
3. Place the cursor on the variable to solve. For this example, the variable is X.
The current value of X stored in the calculator is displayed (X=0).
You should enter a value close to your estimate of the solution. If needed, you can look
at the intersection of the graph of both sides of your equation or use the table of
values to know more about your problem. Here, X=0 is a reasonable starting point for
the calculator computation.
Bound – {-1E99, 1E99} represents the calculator version of the Real Number line:
{-1x1099, 1x1099}. You can change this interval if you know about where the solution
lies given your study of a graph or table. For most textbook problems, you probably will
not have to change this line.
4. Press the [SOLVE] (s) shortcut key.
5. Check your solution. The calculator checks the solution it generated.
Interpreting the Numeric Solver Screen
Always read the context help line for tips.
The solution will be marked with a small
square.
(Advanced) Bounds gives the interval where the solution is found. Here, {-1E99, 1E99}
is {-1x1099, 1x1099} which has the calculator looking for the solution within a very
large interval of numbers. You can adjust this interval if you do not get all the
solutions to your equation by limiting the values to a smaller interval. Here, there is
only one solution,
X=-2.
Solving Equations 51
52 Solving Equations
E1-E2=0 (expression 1 =expression 2) is finding the difference of the left hand side of
your equation, E1 with X=-2 and the right hand side of your equation, E2 with X=-2.
The difference is zero. The equation balances. X=-2 is the solution. (Advanced: When
E1=E2 is not zero, but is a small value, the calculator algorithm likely gave a result
close to the exact answer but within some tolerance of the calculator arithmetic.)
Managing Calculator Files
This section explains how to transfer the OS from calculator to calculator and describes
compatibility between graphing calculators.
Transferring the OS from calculator to calculator
You can transfer the operating system from one calculator to another using a USB unit-
to-unit cable.
Connect the two calculators by firmly inserting the USB cable ends into the calculators.
The USB port is located on the front-right side of the calculator.
Note: You cannot transfer the OS or files using the TI Charging Station CE (see the
Accessories section). The TI Charging Station CE only charges the TI-84 Plus CE
graphing calculators.
Receiving calculator:
y 8 ~ Í
When you press Í, the graphing calculator displays the
message Waiting...
Sending calculator:
y 8 } } Í
Note: The RESEND menu in y 8 retains the last set of files sent from the sending
calculator.
Compatibility with Graphing Calculators
Note: Not all TI-84 Plus CE graphing calculator files are compatible with other
TI-84 Plus Family graphing calculator files because of the high resolution of the color
screen. In general, numeric files (not limited to lists, variables, matrices, and
functions) are shared between these graphing calculators but Apps are not shared
between these graphing calculators even if they have the same title. When not
compatible, the computer file extensions for the TI-84 Plus CE are different from a
similar variable from the TI-84 Plus/TI-84 Plus Silver Edition graphing calculators.
File Type Link From Link From
TI-84 to TI-84
Plus CE
TI-84 Plus CE to
TI-84
TI-84 Plus
Computer
TI-Plus CE
Computer
Operating
System
No No 8xu 8eu
Managing Calculator Files 53
54 Managing Calculator Files
File Type Link From Link From
TI-84 to TI-84
Plus CE
TI-84 Plus CE to
TI-84
TI-84 Plus
Computer
TI-Plus CE
Computer
Apps No No 8sk 8ek
AppVar1Yes Yes 8xp 8xp
Programs - TI
Basic 1, 2
Yes yes 8xp 8xp
Assembly
Programs1
Yes No 8xp 8xp
Pictures No No 8xi 8ci
Background
Images
N/A No N/A 8ca
Group Files Yes Yes 8xg 8xg
User Zoom Yes Yes 8xz 8xz
String Yes Yes 8xs 8xs
Table Yes Yes 8xt 8xt
Function File Yes Yes 8xy 8xy
GDB3Yes Yes 8xd 8xd
List Yes Yes 8xl 8xl
Matrix Yes Yes 8xm 8xm
Number Yes Yes 8xn 8xn
Complex Yes Yes 8xc 8xc
Window Setup Yes Yes 8xw 8xw
Backup No No 8xb —
1App Vars and Programs should be reviewed for use after the transfer between the
TI-84 Plus family graphing calculators. Some App Vars may not setup an App as
expected. Some Programs will need to be modified due to the difference in screen
resolution and new commands.
2Programs created using commands available only in the latest OS version will not
transfer to graphing calculators with an earlier OS version.
3You may receive a version error if you used DOT-THIN line style. Change the line style
to avoid the error.
Using Press-to-Test
Use Press-to-Test to manage exams using TI graphing calculators in your classroom.
Setting Up Test Mode
1. Turn the calculator OFF.
2. Press and hold down the ~,|and Ékeys and then release.
3. The RESET OPTIONS screen displays.
4. To change the default settings, move the cursor over the desired setting and press
Í.
By default:
• ANGLE is set to DEGREE
• STAT DIAGNOSTICS is set to ON
• DISABLE logBASE and DISABLE S(are set to YES
5. Press OK to display the confirmation screen.
6. Press any key to place the calculator in test mode.
Note:
• The status bar is blue when in TEST MODE and TEST MODE ENABLED.
• Pic & Image Vars are disabled.
• All variables stored in RAM and in archived memory are deleted.
7. On the exam calculator, press Œto verify that applications are disabled. The
following screen displays:
8. On the exam calculator, press ¼to verify that programs have been disabled.
The following screen displays:
Using Press-to-Test 55
56 Using Press-to-Test
9. On the exam calculator, Pic and Image Vars are shown as disabled. The following
screen displays:
10. In memory management (y L,2:Mem Management/Delete...), disabled files
will display with the not equal sign.
Bringing a Calculator Out of Test Mode
You can re-enable all disabled calculator files by using one of the following methods:
• Link two TI-84 Plus CE graphing calculators using a unit-to-unit USB cable and then
transfer a file by using y 8,SEND RECEIVE.
• Use TI Connect CE to send a calculator file to the calculator.
• Use the TI TestGuard™ App re-enable feature.
To clear a calculator of files created during an exam:
1. Turn off the calculator while in test mode.
2. "Re-Press-to-Test" - press and hold down the ~,|, and Ékeys, then release.
3. Select OK when you see the Reset Verification Screen. The calculator is now
"clean".
Tip: To preserve battery life, take your calculator out of Press-to-Test mode after
the exam.
Using Press-to-Test 57
58 Using Applications (Apps)
Using Applications (Apps)
These applications are preloaded on your TI-84 Plus CE, and you can install Apps. You
can view the Applications Guidebook, install applications, and install the
TI Connect™ CE software at education.ti.com/go/download.
Press Œto see the complete list of applications.
Cabri™ Jr. App
Construct, analyze, and transform mathematical models and geometric diagrams on
your TI graphing calculator. You can:
• Perform analytic, transformational, and Euclidean geometric functions
• Build geometric constructions interactively with points, a set of points for locus,
lines, polygons, circles, and other basic geometric objects
• Alter geometric objects on the fly to see patterns, make conjectures, and draw
conclusions
CellSheet™ App
Combines spreadsheet functionality with the power of a graphing calculator.
Create cell formulas and use built-in functions.
Cells can contain:
• Integers
• Real numbers
• Formulas
• Variables
• Text and numeric strings
• Functions
Each spreadsheet contains 999 rows and 26 columns. The amount of data you can
enter is limited only by the available RAM.
• Store (x,y) coordinate pairs to lists for viewing and optimizing functions for linear
programming.
Conic Graphing App
Presents equations in function, parametric, or polar form and provides a simple way to
graph the four conic shapes:
• Ellipse
• Circle
• Parabola
• Hyperbola
Enter the required parameters to graph, trace, or solve for the conic's characteristic.
Inequality Graphing App
Gives you new features for graphing equations and inequalities and evaluating the
relationship between them. You can:
• Enter inequalities using relation symbols
• Graph inequalities and shade the union and intersection regions
• Enter inequalities (vertical lines only) in an X=editor
• Trace points of interest (such as intersections) between relations
• Store (x,y) coordinate pairs to lists for viewing and optimizing functions for linear
programming.
Periodic Table App
Provides a graphical representation of the elements of the Periodic Table. This
application allows you to:
• Observe and explore the Periodic Table of the Elements
• Find property data and useful information about the known elements
• Sort the elements by atomic number, alphabetically by name, or alphabetically by
symbol
• Identify groups of elements by region (noble gasses, halogens, etc.) and block (p-,
d-, s- and f-)
• Export property data to lists for further analysis
• Graph the major properties (atomic radii, electronegativities, etc.) against atomic
number to illustrate the periodic nature of the elements.
Polynomial Root Finder and Simultaneous Equation Editor App
This application:
• Calculates the roots (zeros) of polynomials of degree 1 through 10 with a
convenient, easy-to-use interface.
• Allows you to store solutions into lists, load a list into the application for
polynomial coefficients, and store the polynomial to a Y-Var to graph after quitting
the App.
• Finds solutions to systems of linear equations.
• Allows you to load matrices containing the coefficients of linear systems, and
identify whether a given system has a unique solution, an infinite number of
solutions, or no solution.
Probability Simulation App
Explore probability theory with interactive animation that simulates the rolling of dice
and tossing of coins and generates random numbers on your calculator. Options
include:
• Bar Graph - Trace on probabilities or frequencies
• Table of trials data
• Settings for specifying numbers of trials
• Ways to collect data
Using Applications (Apps) 59
60 Using Applications (Apps)
• Weighting
In addition, students can export data for further exploration.
Science Tools App
Science Tools allows you to perform unit conversions on your calculator. App elements
include:
• Significant Figures Calculator
• Constants and Conversions
• Data and Graph Wizard
• Vector Calculator
SmartPad™ CE App
Connecting a Calculator as a Remote Key Pad
The SmartPad™ CE App allows you to connect a calculator as a remote key pad.
To use the TI-84 Plus CE as a remote keypad for TI-SmartView™ CE:
1. SmartPad™ CE App for TI-84 Plus CE comes pre-loaded on the calculator. If not on
your TI-84 Plus CE, SmartPad CE App is also available to load to your calculator at
education.ti.com/go/download.
2. Connect your TI-84 Plus CE to your computer using the USB Computer cable which
came with your calculator.
3. Launch TI-SmartView™ CE.
Note: Click on the TI-SmartView™ CE emulator keypad to make sure it is in focus.
4. Run SmartPad™ CE App on your TI-84 Plus CE.
5. Press Œand select SmartPad™ CE from the Apps menu.
6. Read the information on the splash screen.
7. Press keys on the calculator key pad which remotely press the emulator key pad.
To stop the App:
• Disconnect the USB cable from the calculator to stop the App and remote key pad
feature.
Tip: Reconnect the USB cable and run the App again if the remote key pad
connectivity is no longer responding.
Note:
• The TI-84 Plus CE running the SmartPad™ CE App will not display calculations or
graphs. The calculator becomes a remote USB key pad for the emulator only.
• The TI-84 Plus CE will remain a remote key pad when the TI-SmartView™ CE
emulator keypad is in focus. Click on the TI-SmartView emulator prior to pressing
keys on the calculator.
• The TI SilverLink cable is not supported in TI-SmartView™ CE.
TI-Innovator™ Hub App
The TI-Innovator™ Hub App runs automatically in CE OS 5.3 and higher when the App is
loaded on the calculator. The TI-Basic program editor is enhanced with a HUB
submenu to help you with spelling and syntax of commands for TI-Innovator™ Hub
programming. Save time by using the submenu to paste full TI-Innovator™ commands
rather than typing alpha characters from the keypad as you write your programs.
Note: You can get CE OS 5.3 or higher and the TI-Innovator™ Hub App at
education.ti.com/go/download .
Transformation Graphing App
Transformation Graphing lets you observe the effects of changing coefficient values
without leaving the graph screen. Transformation Graphing affects only function
graphing mode. X is the independent variable and Y is the dependent variable. It is not
available in parametric, polar, or sequence graphing modes.
Transformation Graphing allows you to manipulate up to four coefficients on the
graph: A, B, C, and D. All other coefficients act like constants using the value in
memory. You can step through the transformation of a function or animate the
transformation using play styles, play/pause, play, and fast play.
Vernier EasyData™ App
Use EasyData™ App from Vernier Software & Technology to explore your world. The
EasyData™ App auto-launches data collection when used with Vernier EasyTemp™
sensor, and loads built-in experiments for every supported Vernier sensor.
Using Applications (Apps) 61
62 Using Accessories
Using Accessories
This section covers how to use:
• TI computer software
• TI Charging Station CE
• TI rechargeable batteries
Using TI Desktop Software
Use TI desktop software to exchange information between your graphing calculator
and your computer, or to display a TI graphing calculator for your entire classroom.
Using TI-SmartView™ CE
The TI-SmartView™ CE software allows you to display a TI graphing calculator for your
entire classroom. With TI-SmartView™ CE software, you can:
• View the history of your key press entries.
• Capture and save screen shots to use in other documents as you investigate a math
or science concept.
• Use the View3™ pane to show three additional screens simultaneously.
The TI-SmartView™ CE software includes two workspaces:
•Calculator Emulator: allows you to perform calculations and view answers as you
would on a physical calculator
•Emulator Explorer: allows you to manage emulator content
Using TI Connect™ CE
The TI Connect™ CE software makes exchanging information between your graphing
calculator and your computer quick and easy.
The TI Connect™ CE software includes three workspaces:
•Calculator Explorer: allows you to manage calculator content
•Screen Capture: allows you to manage screen captures
•Program Editor: allows you to work with TI-Basic programs
Using the TI Charging Station CE
The TI Charging Station CE has 10 slots, and each slot can accommodate a TI-84 Plus
CE graphing calculator. Place a TI-84 Plus CE graphing calculator in one of these slots to
charge the TI Rechargeable Battery.
Note: It is not necessary to fill all the slots in the charging station to charge batteries.
Preparing Charging Stations for Use
The TI Charging Station CE is shipped with the following components in each package:
• A TI Charging Station CE
• An AC adapter
• A regional power cord adapter
1. Insert the small end of the power adapter cord into the charging station’s power
jack.
2. Plug the other end of the adapter into a power outlet.
• An indentation on each side of the TI Charging Station CE enables you to lift it.
Always use two hands to lift and move the charging station.
• Place the charging station on a flat, stable surface. You can also use a wheeled cart
if you need to move the charging station between classrooms. When deciding on a
location, consider its proximity to a power source such as a power strip or wall
outlet.
Inserting Graphing Calculators into the TI Charging Station CE
The slots in the TI Charging Station CE are designed to accommodate a graphing
calculator without a slide case attached. The calculator will not fit in the slots with the
slide case attached.
The front of the calculator must face the front of the charging station. You may
damage the TI-84 Plus CE graphing calculator if you try to force it into the charging
station facing the wrong direction. When looking at the TI logo on the charging station,
insert calculators into the slot with the keypad facing left.
Using Accessories 63
64 Using Accessories
1. Remove the slide case from the graphing calculator.
2. Align the grooves on the sides of the graphing calculator with the guides in the
charging station slots. Ensure the calculator is facing the proper direction.
3. Gently push the graphing calculator into the slot. You will feel a slight resistance;
continue pushing down until the graphing calculator is seated.
When the TI-84 Plus CE graphing calculator is properly seated in a slot, the LED light on
the side of the calculator turns amber to indicate it is charging.
Charging Batteries
The TI-84 Plus CE graphing calculator uses a Li-Ion TI Rechargeable Battery.
The charging process starts automatically when a graphing calculator is placed in a slot
on a powered charging station. You can charge a classroom set of graphing calculators
overnight.
Determining Battery Status
The LED light on each connected graphing calculator in the charging station provides
basic information about the status of the rechargeable battery.
• When the light is amber, the battery is charging.
• When the light is green, the battery is fully charged.
Troubleshooting
If the recharge fails:
• Make sure the graphing calculator is seated properly in the slot. Batteries are not
charged if the connector on the graphing calculator and the connector in the slot
are not aligned.
• Check the connector on the graphing calculator to ensure that it is clean. If there is
build-up on the graphing calculator’s connector, you can remove it with a clean, dry
cloth or a pencil eraser. Never use wet cloths or solutions of any kind.
Storing Charging Stations
Store the TI Charging Station CE on a flat surface such as a table or a wheeled cart. You
cannot damage the charging station by leaving it plugged in for extended periods of
time. Also, you cannot damage the batteries by leaving them in the charging station
beyond the time needed to fully charge them.
Using, Replacing, and Charging Batteries
The TI-84 Plus CE graphing calculator comes with a:
• TI rechargeable battery
• USB computer cable for transferring files and charging the battery
Note: Charge the battery for at least four hours to ensure optimum performance.
Battery Status
The battery status icon on the upper right of the screen gives information on battery
life.
The battery icons indicate the level of battery power remaining, and indicate if the
battery is charging.
Battery is 75% to 100% charged.
Battery is 50% to 75% charged.
Battery is 25% to 50% charged.
Battery is 5% to 25% charged.
Battery is charging.
Warning:
• RAM memory will be lost if the battery charge is lost. You should back up or
archive your variables if your battery power gets low.
Displays this message when you turn on the unit.
Deep Sleep Mode
To maximize battery life, this graphing calculator is shipped in Deep Sleep
mode. To wake the handheld from this mode, press Éfor at least 4 seconds or
apply USB (computer or wall adapter) or TI Charging Station CE power. After
waking the handheld, you can turn it on anytime by pressing É. To maximize
battery life during extended storage periods, the Deep Sleep mode is enabled
automatically after a period of being in the off state.
Recharging the TI Rechargeable Battery
You should make sure the TI-84 Plus CE battery is charged for classroom use and
before exams.
Using Accessories 65
66 Using Accessories
Use one of the following options to charge the battery in the TI-84 Plus CE graphing
calculator:
• Connect the graphing calculator to a computer using a USB computer cable.
-or-
• Connect to a wall outlet using a TI wall adapter (may be sold separately).
-or-
• Place the graphing calculator in a TI Charging Station CE.
The amount of time required to fully charge the battery may vary, but charging takes
approximately four hours. It is not necessary to remove the TI Rechargeable Battery
from the graphing calculator to recharge it. The graphing calculator operates normally
while it is attached to a charging source.
To recharge a graphing calculator from a computer, a TI USB driver must be installed.
To download TI Connect™ CE or TI-SmartView™ CE software that includes a driver, go
to: education.ti.com/go/download.
Replacing TI Rechargeable Batteries
Take these precautions when replacing rechargeable batteries:
• Use only the charger recommended for the battery, or the one that was provided
with the original equipment.
• Remove the graphing calculator from the charger or alternating current adapter
when not in use or being charged.
•Do not use the battery in other devices because:
- This may result in personal injury or damage to equipment or property.
- There is a risk of explosion if a battery is replaced by the wrong type.
Replacing the Battery
Use only the TI Rechargeable Battery to replace the TI-84 Plus CE battery.
To replace the battery, follow these steps.
1. Use a small screwdriver to release the panel from the
back of the handheld.
2. Remove the panel.
3. Remove the old battery.
4. Drop in a new battery.
5. Replace the back panel and fasten the screws with a
screwdriver.
Disposing of Used Batteries Safely and Properly
Do not mutilate, puncture, or dispose of batteries in fire. The batteries can burst or
explode, releasing hazardous chemicals. Discard used batteries according to local
regulations.
When the TI Rechargeable Battery is fully charged, the graphing calculator draws
power in the following order:
1. From a connected external power source, such as:
• A computer connected through a USB computer cable
-or-
• A TI wall adapter (may be sold separately)
2. From the TI Rechargeable Battery
Using Accessories 67
68 Diagnosing and Correcting Error Conditions
Diagnosing and Correcting Error Conditions
The TI-84 Plus CE detects errors while performing these tasks:
• Evaluating an expression
• Executing an instruction
• Plotting a graph
• Storing a value
1. Determine the error. The error screens give helpful hints about what may have
happened, but the errors are not always fully explained.
2. Correct the expression.
Diagnosing an Error
When the TI-84 Plus CE detects an error, it returns an error message with a short
description.
1:Quit Displays the home screen
2:Goto Displays the previous screen with the cursor at or near the error
location
Note: If a syntax error occurs in the contents of a Y= function during program
execution, then the 2:Goto option returns to the Y=editor, not to the program.
Correcting an Error
To correct an error, follow these steps.
1. Note the error type (ERROR:error type).
2. Select 2:Goto (if it is available).The previous screen is displayed with the cursor at
or near the error location.
3. Determine the error. The error screens give helpful hints about what may have
happened, but the errors are not always fully explained.
4. Correct the expression.
General Information
Texas Instruments Support and Service
General Information: North and South America
Home Page: education.ti.com
KnowledgeBase and e-mail inquiries: education.ti.com/support
Phone: (800) TI-CARES / (800) 842-2737
For North and South America and U.S.
Territories
International contact information: education.ti.com/support/worldwide
For Technical Support
Knowledge Base and support by e-mail: education.ti.com/support or
ti-cares@ti.com
Phone (not toll-free): (972) 917-8324
For Product (Hardware) Service
Customers in the U.S., Canada, Mexico, and U.S. territories: Always contact Texas
Instruments Customer Support before returning a product for service.
For All Other Countries:
For general information
For more information about TI products and services, contact TI by e-mail or visit the TI
Internet address.
E-mail inquiries: ti-cares@ti.com
Home Page: education.ti.com
Service and Warranty Information
For information about the length and terms of the warranty or about product service,
refer to the warranty statement enclosed with this product or contact your local Texas
Instruments retailer/distributor.
Precautions for Rechargeable Batteries
Take these precautions when replacing rechargeable batteries:
• Use only the charger recommended for the cell or battery, or the one that was
provided with the original equipment.
• Remove the cell or battery from the charger or alternating current adapter when
not in use or being charged.
• Use of the battery in other devices may result in personal injury or damage to
equipment or property.
General Information 69
70 General Information
• Do not mix brands (or types within brands) of batteries. There is a risk of explosion
if a battery is replaced by the wrong type.
Disposing of Batteries
Do not mutilate, puncture, or dispose of batteries in fire. The batteries can burst or
explode, releasing hazardous chemicals. Discard used batteries according to local
regulations.

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