Texas Instruments TI-73 Explorer Manual

$Titlepg.doc TI-73: Title Page/Important Notice, English Bob Fedorisko Revised: 06/10/03 8:45 AM Printed:
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In this guidebook, TI-73 refers to both the TI-73 and
TI-73 Explorer. All functions, instructions, and examples in
this guidebook work identically for both the TI-73 and the
TI-73 Explorer.
Macintosh is a registered trademark of Apple Computer, Inc.
© 1998, 2001–2003 Texas Instruments Incorporated

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Important Information
Texas Instruments makes no warrant , either express or implied,
including but not limited to an implied warranties of merchantabilit
and fitness for a particular purpose, regarding an programs or book
materials and makes such materials available solel on an “as-is” basis.
In no event shall Texas Instruments be liable to an one 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 liabilit of Texas Instruments, regardless of the form of action,
shall not exceed the purchase price of this calculator. Moreover, Texas
Instruments shall not be liable for an claim of an kind whatsoever
against the use of these materials b an other part .
US FCC Information Concerning Radio Frequency
Interference
This equipment has been tested and found to compl with the limits for a
Class B digital device, pursuant to Part 15 of the FCC rules. These limits
are designed to provide reasonable protection against harmful
interference in a residential installation. This equipment generates, uses,
and can radiate radio frequenc energ and, if not installed and used in
accordance with the instructions, ma cause harmful interference with
radio communications. However, there is no guarantee that interference
will not occur in a particular installation.
If this equipment does cause harmful interference to radio or television
reception, which can be determined b turning the equipment off and on,
ou can tr to correct the interference b one or more of the following
measures:
¦ Reorient or relocate the receiving antenna.
¦ Increase the separation between the equipment and receiver.
¦ Connect the equipment into an outlet on a circuit different from that
to which the receiver is connected.
Consult the dealer or an experienced radio/television technician for help.
Caution: An changes or modifications to this equipment not expressl
approved b Texas Instruments ma void our authorit to operate the
equipment.
This digital apparatus does not exceed the Class B limits for radio noise
emissions from digital apparatus set out in the Radio Interference
Regulations of the Canadian Department of Communications.

7300ENG.DOC TI-73: Table of Contents, English Julie Hewlett Revised: 05/04/98 4:48 PM Printed: 05/19/99 8:58
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Table of ContentsTable of Contents
Chapter 1: Operating the TIN73 1
Preparing to Use Your TIN73.........................................3
The Home Screen...........................................................5
Entering Numbers and Other Characters .....................6
Functions and Instructions ..........................................12
Entering Expressions....................................................15
Retrieving Previous Entries -£......................17
Recalling and Storing the Last Answer -¢......18
Mode Settings..............................................................22
Chapter 2: Math Operations 25
Keyboard Math Operations ........................................27
The 1MATH Menu ................................................34
The 1NUM Menu ..................................................44
The 1PRB Menu ....................................................49
The 1LOG Menu.................................................... 54
Chapter 3: Fractions 57
Entering Fractions........................................................58
Using Fractions in Calculations ...................................59
Fraction Modes ............................................................60
Converting between Fractions and Decimals............. 64
Converting between Mixed Numbers and
Simple Fractions......................................................65
Chapter 4: Measurement Conversions and
Constant Calculations 67
The -‚CONVERSIONS Menu.......................68
Constants......................................................................71
Chapter 5: Lists 77
Steps for Creating a List ..............................................78
The List Editor 3....................................................79
Naming a List ...............................................................79
Entering List Elements .................................................81
Editing Lists in the List Editor...................................... 87
The -vLs Menu .................................................91
The -vOPS Menu ..............................................92
List Commands from the Home Screen ....................102

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Chapter 6: Statistical Plots 107
Steps for Defining a Stat Plot ................................... 108
Defining Statistical Data in Lists ............................... 109
Deselecting YnFunctions .......................................... 109
Defining a Stat Plot ................................................... 109
Selecting Stat Plot Types ........................................... 111
Defining Stat Plot Options........................................ 112
Adjusting Window Values and Format .................... 114
Displaying the Stat Plot............................................. 114
Stat Plot Examples ..................................................... 114
Chapter 7: Statistical Analyses 127
The -vMATH Menu........................................ 128
The -vCALC Menu.......................................... 133
Chapter 8: Tables 149
What Is a Table? ........................................................ 150
Steps for Creating a Table ........................................ 151
Defining and Selecting Functions in the
Y= Editor &........................................................ 152
Setting Up the Table -f............................ 153
Displaying the Table -i............................... 154
Table Setup from the Home Screen ......................... 161
Chapter 9: Function Graphing 163
Steps for Graphing a Function.................................. 164
Example of Function Graphing................................. 165
Defining Functions in the Y= Editor &................. 167
Selecting a Graph Style ............................................. 169
Setting the Window Format -g................ 171
Defining Window Values .......................................... 173
Displaying a Graph *....................................... 177
Adjusting Window Values with
the (ZOOM Menu ........................................ 181
The (MEMORY Menu........................................ 185
Chapter 10: Drawing 187
The 2DRAW Menu ............................................. 188
The 2POINTS Menu............................................ 201
The 2STO Menu ................................................. 206

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Chapter 11: Trigonometry 209
The -uTRIG Menu ........................................... 210
Graphing Trig Functions............................................214
The -uANGLE Menu .......................................215
Chapter 12: Programming 221
What Is a Program? ...................................................223
Steps for Creating a Program.................................... 223
Creating and Naming a New Program ..................... 224
Entering Program Commands...................................226
The 8CTL Menu .................................................. 227
The 8I/O Menu....................................................241
Editing Program Commands ..................................... 248
Executing a Program .................................................251
Debugging a Program...............................................252
Chapter 13: Communication Link and the
CBLàCBR Application 253
TIN73 Link Capabilities...............................................254
The Link SEND Menu 91 ...................................255
The Link RECEIVE Menu 91 "..........................257
Transmitting Data Items............................................258
Backing Up Memory .................................................. 261
Upgrading your TIN73 Graph Explorer Software.....262
The APPLICATIONS Menu 9...............................263
Steps for Running the CBLàCBR Application ..........264
Selecting the CBL/CBR Application ...........................265
Specifying the Data Collection Method ................... 265
Specifiying Data Collection Options......................... 266
Collecting the Data....................................................273
Stopping Data Collection ..........................................274
Chapter 14: Memory Management 275
The -ŸMEMORY Menu...................................276
Appendix A: Function and Instruction Reference 283

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Appendix B: Reference Information 319
The TIN73 Menu Map ................................................ 320
The VARS Menu -}....................................... 329
Equation Operating System (EOS é)........................ 330
In Case of Difficulty ................................................... 330
Correcting an Error.................................................... 331
Error Messages........................................................... 332
Appendix C: BatteryàService and
Warranty Information 339
Battery Information .................................................. 340
Texas Instruments (TI) Support and Service ............. 342
Warranty Information............................................... 343
Index 345

7301ENG.DOC CH1 Operating the TI-73, English Julie Hewlett Revised: 07/29/98 11:55 AM Printed: 05/19/99
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Operating theOperating the TITIN 7373
Preparing to Use Your TIN73................................................. 3
Installing the AAA Batteries...........................................3
Turning the TIN73 On and Off ....................................... 3
Adjusting the Display Contrast ......................................4
Resetting Memory and All Defaults...............................4
The Home Screen................................................................... 5
Entering Numbers and Other Characters.............................6
Entering a Negative Number a...................................6
Entering a Number in Scientific Notation -{.......7
Entering Secondary Functions -...............................7
Entering Text -t.................................................7
Common Display Cursors ..............................................10
Editing Numbers and Characters .................................11
Functions and Instructions .................................................. 12
Accessing Functions and Instructions from Menus .....12
Accessing FunctionsàInstructions from the CATALOG... 14
Entering Expressions............................................................15
Grouping Parts of Expressions with Parentheses ........16
Using Implied Multiplication in Expressions................16
Entering Multiple Expressions on One Line ................16
Retrieving Previous Entries -£..............................17
Recalling and Storing the Last Answer -¢..............18
Continuing a Calculation with Ans ..............................18
Using Ans as a Variable in an Expression ....................19
Storing Values to a Variable X.............................20
Recalling Variable Values -P.............................21
1

2Chapter 1: Operating the TIN73
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Mode Settings ..................................................................... 22
Numeric Notation Mode .............................................. 23
Decimal Notation Mode ............................................... 24
Angle Mode .................................................................. 24
Display Format Mode ................................................... 24
Simplification Mode ..................................................... 24

Chapter 1: Operating the TIN73 3
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Preparing to Use Your TIN 73
Before using your TIN73, you must install the batteries, turn on
the calculator, and adjust the contrast. You may reset (clear)
the calculator memory and defaults, if desired.
Installing the AAA BatteriesInstalling the AAA Batteries
Install four AAA batteries in the battery compartment on the
back of the calculator. Arrange the batteries according to the
polarity (+ and -) diagram in the battery compartment. For
more information about installing batteries, see Appendix C:
BatteryàService and Warranty Information.
Turning theTurning the TITIN 7373 On and OffOn and Off
To turn on the TIN73, press ^.
To turn off the TIN73 manually,
press the yellow -key and
then press ^(indicated in this
book as -).
When you press -, all settings and memory contents are
retained by Constant Memoryè. Any error condition is
cleared. To prolong battery life, the APDè(Automatic Power
Down) feature turns the TIN73 off automatically after a few
minutes without any activity.
When you turn on the calculator:
• The Home screen is displayed if you previously turned off
the calculator by pressing -. It appears as it did
when you last used it; all errors are cleared.
 or 
• The calculator displays the last screen (including the
display, cursor, and any errors) that was displayed before
Automatic Power Down turned off the calculator.

4Chapter 1: Operating the TIN73
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Adjusting the Display ContrastAdjusting the Display Contrast
The brightness and contrast of the display can depend on
room lighting, battery freshness, and viewing angle.
To adjust the contrast:
1. Press and release the yellow -key.
2. Press and hold $(to darken the screen) or #(to lighten
the screen).
As you change the contrast setting, a number from 0 (lightest)
to 9 (darkest) in the top-right corner indicates the current
setting. You may not be able to see the number if the contrast
is too light or too dark.
Resetting Memory and All DefaultsResetting Memory and All Defaults
Follow these steps to reset the TIN73 to its factory settings
and clear all memory:
1. Turn on the calculator.
^
2. Display the MEMORY menu.
-Ÿ (above _)
3. Display the RESET menu.
7
4. Display the RESET RAM
menu.
1
The ^key