Getting Started
with the
TI-73 Explorer™,
CBL 2™, and CBR™
CL3456
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Contents
Contents ............................................................................................ 3
Percent C ....................................................................................... 12
Fractions ......................................................................................... 15
Changing mode settings ................................................................. 23
Creating lists and statistical plots .................................................... 24
Graphing a line ................................................................................ 27
Error messages ............................................................................... 28
MEMORY menu - Ÿ ............................................................... 30
Installing handheld software applications ....................................... 33
Running software applications ........................................................ 35
Collecting data using the CBL™/CBR™ App ................................. 36
Collecting data using the CBL 2é ................................................... 37
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TI-73 Explorer
™
keys
$ " # !
Let you move the
cursor in four
directions on the
screen.
-
Accesses the
secondary
functions of keys
(shown in yellow
above keys).
:
Erases entries and
answers on the
Home screen and
entry line.
9
Lists the applications
installed on your
TI-73 Explorer.
b
Evaluates an
expression, executes
an instruction, and
selects a menu item.
^
Turns on the TI-73
Explorer.
4
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Turning on and turning off the TI-73Explorer
™
•
To turn on the TI-73 Explorer, press ^ located at the lower left
corner of the device.
•
To turn off the TI-73 Explorer, press -, and then the ^ key. The
next time you turn on the TI-73 Explorer, the Home screen appears
with the same settings and memory contents retained.
Automatic Power Down™
The Automatic Power Down™ (APD™) feature prolongs battery life by
turning off the TI-73 Explorer automatically after five inactive minutes.
When you turn on following APD, the handheld device displays the same
information displayed before APD, retaining the same cursor position,
settings, memory contents, and any error conditions.
Note: Avoid depleting your batteries by turning off your TI-73 Explorer
when not in use.
Adjusting the display contrast
Display brightness and contrast depend on factors such as room lighting,
battery freshness, and viewing angle. To adjust the contrast:
1. Press and release -.
2. To darken the screen, press and hold $.
— or —
To lighten the screen, press and hold #.
Note: The flashing cursor (Ù) changes to Û when you press the - key.
As you adjust the setting, a number from 0 (lightest) to 9 (darkest)
appears at the upper right corner of the screen.
Note: If the contrast setting is too light or dark, the number will not be
viewable.
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Home screen
The first time you turn on your TI-73 Explorer™, this screen appears:
Operating system
version
Note: Download the latest operating system (OS) to your Internet-
enabled computer using the TI-Connectivity Kit. Both the latest OS and TI
To clear the screen, press : twice. A blank screen with a flashing
cursor appears called the Home screen. You can use the Home screen to
enter problems and view results.
Home screen
Note: If you press : and do not see a blank Home screen, first press
-, and then press . to select l.
Example: Add 2 + 3 on the Home screen.
Press
Result
2 \ 3
b
6
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Example: Multiply 5 x 4.
Press
Result
5 M 4
b
Entering secondary functions -
Secondary functions are printed in yellow above the keys. To select a
secondary function, first press the yellow - key, and then press a key
with a secondary function.
For example, to view the CATALOG menu, press - |.
Note: The flashing cursor (Ù) changes to Û when you press the - key.
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Entering text - t
You can use the Text Editor to key in text, such as alphabetic characters,
braces, quotation marks, spaces, and relations.
•
•
To access the Text Editor, press - t.
To return to the Home screen from the Text Editor:
Select Done in the Text Editor and press b.
— or —
To cancel the operation, press - l.
Example: Insert R on the Home screen.
Press
Result
- t R b
Note: To select R, press !,
", # and $ as needed. R is
pasted to the entry line.
# # #
(to select Done)
b
8
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Clear
:
and Quit - l
Clear :
The : key is located just below the four cursor keys at the upper
right corner of the keyboard.
•
•
Pressing : while entering information clears the entry line.
Pressing : when the cursor is on a blank line clears the Home
screen.
Note: Although it does not affect calculations, consider clearing the
Home screen before beginning a new problem. We recommend that you
press : each time you begin a new example in this guide to ensure
that the screen you see matches the one in the example.
Quit - l
If you want to return to the Home screen after pressing a menu key, press
- l.
Note: To return to the Home screen and clear it, press - l :.
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Using subtraction
T
and negation
a
keys
•
Use T to enter subtraction operations.
•
Use a to enter a negative number in an operation, expression, or on
a setup screen.
Note: The TI-73 Explorer™ subtraction and negation symbols appear
slightly different to make them easier to distinguish. The negative
symbol is raised and slightly shorter.
Example: Subtract 10 from 25.
Press
Result
Result
Result
2 5 T 1 0
b
Example: Subtract L10 from 25.
Press
2 5 T a 1 0
b
Example: Subtract L5 from 25.
Press
2 5 T T 5
b
Note: If you use the
subtraction key instead of
the negation key, an error
message will appear. (See
“Error messages” on
page 28.)
10
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Keyboard math applications
Example: Add L456 + 123.
Press
Result
Result
Result
a 4 5 6 \ 1 2 3
b
Example: Divide 45.68 P 123.
Press
4 5 ` 6 8 F 1 2 3
b
Example: Multiply 28 Q 1.5.
Press
2 8 M 1 . 5 b
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Integer division - Œ
- Πdivides two positive integers and displays the quotient and
remainder (r).
Example: Calculate 11 P 2 using integer division.
Press
Result
1 1 - Π2
b
Note: The answer is 5 with a
remainder of 1.
Percent
C
Example: Convert 75% to a decimal.
Press
Result
7 5 C
b
12
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Square root - z
Example: Calculate 256 .
Press
Result
- z 2 5 6 E
b
Pi - „
The TI-73 Explorer™ displays p = 3.141592654 but uses 3.1415926535898
in calculations.
Example: Multiply 4 Q p.
Press
Result
4 M - „
b
14
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Fractions
This example shows the stacked fraction and manual simplification
features of the TI-73 Explorer™. (See Chapter 3 of the TI-73 Explorer
Software Graphing Calculator Guidebook.)
Example: Add 1 3/4 + 2 4/8 and manually simplify the result.
Press
Result
.
# # # # "
b - l
(to select Mansimp)
1 < 3 = 4 " \
2 < 4 = 8 b
Note: The arrow on the
screen indicates that the
answer can be simplified.
? b
(optional step to convert
mixed fraction to simple
fraction)
B b
(to simplify the result)
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Choosing the simplification factor
Example: Add 4/16 + 8/16 and choose the simplification factor to reduce
the sum to lowest terms.
Press
Result
- l :
4 = 1 6 " \ 8 =
1 6 b
B 2 b
B 3 b
Because the result did
not change, try another
factor.
B 2 b
Simplification is
complete.
16
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Constants with counter-creating number patterns
The TI-73 Explorer™ Constant feature makes it easy to create number
patterns. Watch the pattern in the example below take shape on the
Home screen.
Example: Set up a SINGLE counter, define a constant (+5), and create a
number pattern.
Press
Result
y †
} (if necessary)
b
† \ 5
- l :
0 @
(Press @ repeatedly until
you reach 30.)
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Scrolling on the Home screen
The TI-73 Explorer™ scrolling feature helps make number investigation
easy by providing a copy and paste functionality.
Example: Sum the second (5 + 5) and fifth (20 + 5) terms of the number
pattern created in the previous example. (See “Constants with counter-
creating number patterns” on page 17.)
Press
Result
Press } repeatedly to
select the second term
(n=2).
b
\
Press } repeatedly to
select the fifth term
(n=5).
b b
18
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Using parentheses D E
Example: Multiply 4 * 1 + 2 and 4 * (1 + 2).
Press
Result
4 M 1 \ 2
b
4 M D 1 \ 2 E
b
Example: Divide 1/2 P 2/3 (not using stacked fraction capability).
Press
Result
D 1 F 2 E F
D 2 F 3 E
b
1
--
Example: Calculate 16 ^
.
2
Press
Result
1 6 7 D 1 F2 E
b
Note: Try each of the examples above without the parentheses and see
what happens!
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TI-73 Explorer
™
menus
You use a menu to enter most TI-73 Explorer functions and instructions
on the Home screen.
To select an item from a displayed menu:
•
Press the number or letter displayed to the left of the item.
— or —
•
Use the cursor keys († or }) to select the item, and then press Í.
Some menus close automatically when you make a selection. If a menu
remains open, press y 5 to exit.
Example: Find the gcd(12, 14) = 2.
Press
Result
2
— or —
† Í
1 2 , 1 4 ¤
Í
20
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Selected TI-73 Explorer™ menus
To select
Description
Press
Mode menu
Lists commands that let you control how
numbers are displayed and interpreted
.
MATH menu
DRAW menu
Lists math functions, including number,
probability, and logic
•
•
Lists graph and plot drawing tools
Lets you store pictures in memory
2
List Editor
Lets you enter numerical and text, or
3
categorical, lists
Program menu Lists stored programs and programming
commands and instructions
8
Œ
APPLICATIONS Lists the Apps installed on your TI-73
menu
Explorer
Text Editor
Lets you enter text, such as alphabetic
characters, braces, test operators,
quotation mark, space
y t
Trigonometry
menu
Lists trigonometric functions and angle y u
unit options
Statistics menu Lets you open and edit lists and calculate y v
statistical analysis on lists
MEMORY
menu
Lets you manage TI-73 Explorer memory y L
VARS menu
Lists variable names you can paste to the y }
entry line
CATALOG
menu
Lists all built-in functions and
instructions
y N
TI-73 Explorer graphing menus
To select
Description
Press
WINDOW
menu
Lists domain and range options for the
graphing window
'
ZOOM menu
PLOT menu
Lists preset window settings to select
Lists options that let you set up a plot
(
y e
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To select
Description
Press
TABLE SETUP
menu
Lists options specifying table settings
y f
Window
Lets you choose display settings for
y g
format menu
function graphing and statistical plotting
22
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Changing mode settings
Use mode settings to specify how the TI-73 Explorer™ interprets entries
and displays answers.
Example: Change the mode setting for decimals from Float to 3 decimal
places.
Press
Result
.
# " " " "
b
- l
1 ` 2 3 4 5 6
b
Note: Rounds to three
decimal places.
Note: You must highlight a mode setting and press Í to change it.
Mode settings
Mode
Description
Display
Normal Sci
Numeric Notation Displays answers in normal
or scientific notation
Float 0123456789
Degree Radian
Decimal Notation Displays answers in fixed-
or floating-decimal point
Angle
Displays angle values in
degrees or radians
Display Format
(fractions only)
Displays fractions in mixed A§b/c b/c
or simple format
Autosimp Mansimp
Simplification
(fractions only)
Lets you simplify fractions
automatically or manually
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Creating lists and statistical plots
To create categorical and number lists:
1. Use the List Editor to enter the categorical and numerical lists.
2. Use the PLOT menu to plot the lists.
Example: Enter a categorical list in L made up of list elements BLUE,
1
RED, and GREEN, enter a number list in L , and plot a pie chart.
2
Press
Result
3
- t
Note: Press the cursor keys
to highlight characters in
the Text Editor.
“ b B b L b
U b E b “ b
Done
Note: To define categorical
lists, enclose the first list
element in quotation marks.
b b
Note: The lowercase c next
to L signifies the list is
1
defined as categorical.
Repeat steps for RED and
GREEN.
Note: You do not have to
use quotation marks after
the first list element.
24
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Press
Result
"
(to move cursor to L2)
1 5 b 2 5 b 1 0 b
Note: The mode setting for
decimals in this example is
set to Float. (See “Changing
mode settings” on page 23.)
- e
b
! b
(to enter statistical plot
setup screen and turn Plot 1
on)
# " " " "
b
(to select the pie chart)
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Press
Result
# # # "
b
(to display numbers on the
pie chart as percentages)
* )
Note: Press y 5 to return to the Home screen.
26
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Graphing a line
To graph a line:
1. Display the Y= Editor.
2. Enter the line.
3. Display the graph.
(See the TI-73 Explorer™ Software Graphing Calculator Guidebook for
more detailed information.)
Example: Graph the line Y = 2x + 1.
Press
Result
& : 2 I + 1
Note: The Y1 equal sign
highlights when you enter a
character. If another plot or
function is highlighted,
select it and press b to
remove the highlight.
(
# # # #
# # #
(to select ZDecimal and set
up x and y values on graph)
Note: The arrow next to
ZDecimal indicates that you
can press # or $ to display
additional commands.
b
)
Note: TRACE lets you use the
cursor keys to trace to points
to see coordinates on the
line.
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Error messages
The TI-73 Explorer™ displays an error message whenever an error occurs.
Example: Generate an error by entering the least common multiple
function lcm( followed by only one number.
Press
Result
- l :
1 b
2 7 ¡
(to select lcm()
Í
•
•
To return to the Home screen with the cursor on a new entry line,
select 1:Quit.
To correct the error, select 2:Goto. The TI-73 Explorer returns to the
original entry line with the cursor flashing at the location of the
error.
(See Appendix B of the TI-73 Explorer Software Graphing Calculator
Guidebook for a complete list of error conditions with explanations.)
Sample error messages
Error
Description
BREAK
You pressed ^ to break a program execution, halt a
DRAW instruction, or stop evaluation of an expression.
DIM
MISMATCH
You attempted an operation that references more than
one list with different dimensions (number of elements).
DIVIDE BY 0
You attempted to divide by 0.
Note: Because The TI-73 Explorer allows undefined
values on a graph, this error is not displayed during
graphing.
28
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Error
Description
DOMAIN
You specified an argument to a function or instruction
outside the valid range, such as using a negative
frequency in box plots.
Note: Because The TI-73 Explorer™ allows undefined
values on a graph, this error is not displayed during
graphing.
ERROR IN
XMIT
•
The TI-73 Explorer was unable to transmit an item.
Check to see that the cable is connected firmly to
both units and that the receiving unit is in the
receive mode.
•
You pressed ^ to break during transmission.
MODE
You pressed B to simplify a fraction while in the
Autosimp mode.
SCALE
The Pictograph scale is invalid and must be an integer
between 1 and 99,999.
STAT
You attempted a stat calculation with inappropriate
lists.
STAT PLOT
SYNTAX
You attempted to display a graph while a stat plot with
an undefined list is on.
The command contains a syntax error. Look for
misplaced functions, arguments, parentheses, or
commas. (See the TI-73 Explorer Software Graphing
Calculator Guidebook.)
WINDOW
RANGE
A problem exists with the WINDOW variables.
•
•
You defined XmaxXmin or Ymax Ymin.
Ensure that your window values are within the
limits of the TI-73 Explorer.
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MEMORY menu - Ÿ
To display the list of commands used to manage TI-73 Explorer™
memory, press - Ÿ to open the MEMORY menu.
To select a command from the MEMORY menu, use the cursor keys to
select it and press b.
To exit the MEMORY menu or a command screen and display the Home
screen, press either - l or :.
(See Chapter 14 of the TI-73 Explorer Software Graphing Calculator
Guidebook.)
Example: Display and exit the About screen.
Press
Result
- Ÿ
b
(to display the About screen)
: :
Command Action
1:About
Displays TI-73 Explorer product information, such as the
operating system version number and product ID.
2:Check
RAM
Displays the amount of total available memory and the
amount of usage for each variable type.
30
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Command Action
3:Check
APPs
Displays the amount of available App memory (up to eight
spaces).
4:Delete
Displays a list of variables that you can delete to increase
the amount of available RAM.
5:Clear
Home
Clears the Home screen.
6:ClrAllList
7:Reset
Clears all lists in memory.
Displays the RESET menu, where you can reset all RAM and
all defaults.
3:Check APPs - Ÿ
The 3:Check APPs command displays the Spaces Free screen, where you
can view the memory available for Apps in terms of spaces. Apps spaces
are used by preloaded Apps. The preloaded CBL™/CBR™ App uses one
space.
The screen also lists the Apps loaded on the TI-73 Explorer™ and the
number of spaces each uses.
Note: Because Apps do not use RAM, you cannot delete Apps by pressing
- Ÿ 4:Delete 1:All. Instead, press - Ÿ 4:Delete 8:Apps to delete
Apps.
(See Chapter 13 of the TI-73 Explorer Software Graphing Calculator
Guidebook for information on running Apps on the TI-73 Explorer.)
Resetting memory and defaults
Follow these steps to clear all memory and reset the TI-73 Explorer to
factory settings:
1. To display the MEMORY menu, press - Ÿ.
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2. To display the RESET menu, press 7:Reset.
3. To display the RESET RAM menu, press 1:All RAM.
4. Press 2:Reset.
5. Press : to display the Home screen.
Note: When you reset the TI-73 Explorer™, the display contrast is also
reset and might need to be adjusted. See “Adjusting the display
contrast” on page 5.
32
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Installing handheld software applications
handheld software applications (Apps). Installing Apps on your TI-73
Explorer is similar to installing new software applications on your
computer.
After downloading an App to your computer, use TI Connect™ or
TI-GRAPH LINK™ software and a TI Connectivity cable to install the App
on your TI-73 Explorer. You can find the latest Apps and a TI Connectivity
Note: Before downloading an App, ensure your TI-73 Explorer has
enough memory available. (See “3:Check APPs - Ÿ” on page 31.) If
not, consider saving an existing App to your computer and then deleting
it from your handheld to increase the amount of free space available.
Instructions for Windows® using TI Connect
Desktop icon method
1. Connect your computer and handheld device with the TI
Connectivity cable.
2. Turn on the handheld device and go to the Home screen.
3. Select an App file to transfer to the handheld device.
4. Drag the App file to the TI Connect desktop icon on the Windows
desktop.
5. A message advises you when installation is complete. Remove the TI
Connectivity cable from the computer or device.
DeviceExplorer method
1. Connect your computer and handheld device with the TI
Connectivity cable.
2. Turn on the handheld device and go to the Home screen.
3. Start the TI Connect software and click DeviceExplorer. The software
automatically detects the type of connected TI device and displays
the contents.
4. On the DeviceExplorer icon toolbar, click the Windows Explorer
icon.
5. Locate an App file to transfer to the handheld device.
6. Drag the App file to the TI Connect desktop icon on the Windows
desktop.
7. A message advises you when installation is complete. Remove the TI
Connectivity cable from the computer or device.
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Instructions for Macintosh® using TI Connect™
1. Connect your computer and handheld device with the TI
Connectivity cable.
2. Turn on the handheld device and go to the Home screen.
3. Start the TI Connect software and click Connection to connect with
the handheld device.
4. From the displayed list, select a device type and computer port.
5. Click Connect. The device window appears.
6. Locate an App file to transfer to the handheld device.
7. Drag the App file anywhere in the device window.
8. A message advises you when installation is complete. Remove the TI
Connectivity cable from the computer or device.
34
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Collecting data using the CBL
™
/CBR™
App
Example: Run the RANGER program from the CBL/CBR App.
Press
Result
To run the CBL/CBR App, see
“Running software
applications” on page 35
Press any key.
† † b
(to run the RANGER
program)
b
† b
(to set defaults)
Each menu item helps you quickly set up data collection using the CBR.
Investigate on your own.
36
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Collecting data using the CBL 2
é
To use the CBL 2 data collection system for the first time and use the
temperature probe to collect data:
1. Insert batteries in the CBL 2.
2. Connect the CBL 2 to the TI-73 Explorer™ using the unit-to-unit
cable.
Note: You can also use the cradle. (For instructions, see the diagram
on the cradle, or see Getting Started With the CBL 2.)
3. To delete the DataMate programs prior to installing the DataMate
App, reset the memory on your TI-73 Explorer. (See “Resetting
memory and defaults” on page 31.)
Note: Before downloading the DataMate App, ensure that your
TI-73 Explorer has at least 3 App spaces available. (See “3:Check APPs
- Ÿ” on page 31.) If not, consider saving an existing App to your
computer and then deleting it from your handheld to increase the
amount of free space available.
4. Put the TI-73 Explorer in Receive mode.
a. Press Œ. Link is highlighted.
b. Press b.
c. Press " to select RECEIVE.
d. Press b.
5. Press TRANSFER on the CBL 2. The CBL 2 detects the type of handheld
device connected and sends the specified version of the DataMate
App.
Note: The DataMate App controls the CBL 2 and its data collection.
6. Plug in the stainless steel temperature sensor to CBL2 channel 1
(CH1).
7. Run the DataMate App.
a. Press Œ.
b. Press † or $ to select DATAMATE, and then press b.
The DataMate App automatically identifies the Stainless Steel
Temperature sensor, loads its calibration factors, and displays the
name of the sensor and temperature in degrees C. DataMate also
loads a default temperature experiment.
8. To start collecting data with the default experiment, hold the
temperature sensor in your hand and press 2:START.
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9. A real-time graph measuring temperature appears. After about 30
seconds, press X to stop collecting data.
You just successfully collected and plotted data.
For other DataMate options (including other sensors, analysis, and data
saving), see Getting Started With the CBL 2, or visit:
38
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|