Texas Instruments TI-73 Explorer User manual

12/17/01 © 2001 Texas Instruments
TI-73 / TI-83 Plus
Logic Ladder
How To…
Start and Quit the Application
Use On-screen Options and Menus
Complete the Factor Activity
Complete the Classic Activity
Delete the Application
More Information
Scoring
Error Recovery
TI

TI-73 / TI-83 Plus Logic Ladder Page 2
Important Information
Texas Instruments makes no warranty, either expressed 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
any applicable purchase price of this item or material. Moreover,
Texas Instruments shall not be liable for any claim of any kind
whatsoever against the use of these materials by any other
party.
Graphing product applications (Apps) are licensed. See the
terms of the license agreement for this product.
All trademarks are the property of their respective owners.

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What is the Logic Ladder Application?
The Logic Ladder application contains two activities:
•In Factor, you determine the prime factorization of numbers
by selecting the correct bases and exponents.
•In Classic, you order four to six different shapes, determining
the correct shapes in the correct order in less than nine
steps. Clues give you an idea of how close you are to the
correct sequence.
The Logic Ladder application is a concept application that TI
wants to share with our customers, educators, and students
before the product definition and testing are complete. It is an
alpha software version, and as such, it may contain
imperfections, or the coding may be incomplete.
TI invites your feedback concerning the functionality and
educational value of the Logic Ladder application. Please send
your comments and questions to [e-mail].

TI-73 / TI-83 Plus Logic Ladder Page 4
What You Need
Note
In this user guide, any information that pertains to the TI-83 Plus also
pertains to the TI-83 Plus Silver Edition, unless otherwise noted.
Hardware and software
Notes
TI-73 with version 1.50 or higher of the
Graph Explorer software
—or—
TI-83 Plus or TI-83 Plus Silver Edition
with version 1.13 or higher of the
operating system software
You can download a free copy of the
latest Graph Explorer or operating
system software from
education.ti.com/softwareupdates.
Follow the link to Operating Systems.
Computer with Windows® 95/98/2000,
Windows NT®, or Apple® Mac® OS 7.1
or higher installed
TI-GRAPH LINK™ computer-to-
calculator cable
If you do not have this cable, call your
distributor, or order the cable from
TI’s online store.
TI-GRAPH LINK software that is
compatible with the TI-73 or the
TI-83 Plus
—or—
TI™ Connect software (available at the
end of 2001). TI Connect works with all
supported models of TI graphing
calculators.
You can download free copies of
TI-GRAPH LINK and TI Connect from
education.ti.com/softwareupdates.
Follow the link to Connectivity
Software.

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Where to Find Installation Instructions
Detailed instructions on installing this and other applications are
available at education.ti.com/guides. Follow the link to Flash
installation instructions.
Getting Help
The instructions in this guidebook are only for this application. If
you need help using the TI-73 or TI-83 Plus, refer to its
comprehensive guidebook at education.ti.com/guides.

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Starting and Quitting the Application
Starting the Application
1. Press
nto display the list of applications on your
calculator.
2. Select
LogicLdr. The application’s information screen is
displayed.
3. Press any key to continue. The developer’s screen is
displayed.
4. Press any key to continue. The main menu is displayed.
Quitting the Application
From the application’s main menu, select QUIT or press
\.

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Navigating
Selecting Menu Items
To select an item from a menu, press hor `to highlight the
menu item, and then press ¯to select it.
Using On-Screen Options
The main activity screens display a GIVE UP option in the bottom
right corner of the screen. To select this option, press the
graphing key directly below the option.
RSTUV
Press Vto select
GIVE UP.

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Scoring
The Logic Ladder application tracks the number of wins and
losses you have accumulated for both of the activities. Scores for
the activities are combined. For example, if you completed the
Factor activity giving five correct answers and two incorrect
answers and also completed the Classic activity giving three
correct answers and one incorrect answer, the score would show
WINS: 8 LOSSES: 3.
Viewing and Resetting the Score
You can view your score at any time by returning to the MAIN
MENU and selecting VIEW STATS.
To reset the score, return to the MAIN MENU, and select
CLEAR STATS.

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Completing the Factor Activity
The Factor activity lets students practice factoring numbers into
the product of primes.
In the Factor activity, a random number with the prime
factorization of the form AXgBY is generated. A and B are the
prime bases; X and Y are the powers of the prime bases. You
determine which values for A, B, X, and Y create the correct
prime factorization of the number.
1. From the
MAIN MENU, select FACTOR. The FACTOR menu is
displayed.
2. Select
START
to display the first number to factor. The arrow
is at A. The default selections for A,X,B, and Y are
highlighted.
A random number is
generated whose prime
factorization is of the form
AXgBY. Your number will
be different than this one.

TI-73 / TI-83 Plus Logic Ladder Page 10
5. Use the arrow keys (_and a) to highlight the value that you
want to select for A.
Tip
Don’t press ¯yet! Pressing ¯submits your answer. You
must select values for all of the variables before you press
¯.
6. Press
hto move the arrow to the exponent X, and then use
the arrow keys (_, a) to highlight the value that you want to
select for the exponent of A, X.
7. Repeat step 4 to select values for Band Y.
8. After you have selected all four values, press ¯.
Tip
You can move the arrow back to any base or exponent and
change its value before you press ¯.