User Manual
Page 2
... the equipment off and on, you can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may void your authority to provide reasonable protection against the use of these materials by any other party. US FCC Information ...changes or modifications to this equipment does cause harmful interference to radio or television reception, which the receiver is no event shall Texas Instruments be determined by Texas Instruments may cause harmful interference with the limits for a Class B digital device, pursuant to which can be liable to any ...
... the equipment off and on, you can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may void your authority to provide reasonable protection against the use of these materials by any other party. US FCC Information ...changes or modifications to this equipment does cause harmful interference to radio or television reception, which the receiver is no event shall Texas Instruments be determined by Texas Instruments may cause harmful interference with the limits for a Class B digital device, pursuant to which can be liable to any ...
User Manual
Page 3
... the Graph 12 Zooming In on operating the TI.80. The first chapter gives general instructions on the Graph 13 Other TI-80 Features 14 Chapter 1: Operating the TI-80 Turning the TI-80 On and Off Setting the Display Contrast The Display Entering Expressions and Instructions The Edit Keys Setting Modes TI-80 Modes Variable Names Storing and Recalling Variable Values...
... the Graph 12 Zooming In on operating the TI.80. The first chapter gives general instructions on the Graph 13 Other TI-80 Features 14 Chapter 1: Operating the TI-80 Turning the TI-80 On and Off Setting the Display Contrast The Display Entering Expressions and Instructions The Edit Keys Setting Modes TI-80 Modes Variable Names Storing and Recalling Variable Values...
User Manual
Page 6
Chapter 10: Programming Chapter 11: Applications Chapter 12: Memory Management Getting Started: Rolling a Die 10-2 About TI-80 Programs 10-4 Creating and Executing Programs 10-5 Editing Programs 10-6 PRGM CTL (Control) Instructions 10-7 PRGM I/O (Input/Output) Instructions 10-11 Calling Other Programs 10-14 Probability Experiments: Coins, Dice, and Spinners ... 11-2 The Unit ...Graphing Inequalities 11-14 Graphing a Polar Equation 11-15 Program: Guess the Coefficients 11-16 Checking Available Memory Deleting Items from Memory Resetting the TI-80 12-2 12-3 12-4 vi Introduction
Chapter 10: Programming Chapter 11: Applications Chapter 12: Memory Management Getting Started: Rolling a Die 10-2 About TI-80 Programs 10-4 Creating and Executing Programs 10-5 Editing Programs 10-6 PRGM CTL (Control) Instructions 10-7 PRGM I/O (Input/Output) Instructions 10-11 Calling Other Programs 10-14 Probability Experiments: Coins, Dice, and Spinners ... 11-2 The Unit ...Graphing Inequalities 11-14 Graphing a Polar Equation 11-15 Program: Guess the Coefficients 11-16 Checking Available Memory Deleting Items from Memory Resetting the TI-80 12-2 12-3 12-4 vi Introduction
User Manual
Page 7
Appendix A: Tables and Reference Information Appendix B: Service and Warranty Information Index Table of TI-80 Functions and Instructions A-2 Menu Map A-20 TI-80 Variables A-26 Battery Information Accuracy Information In Case of Difficulty Service and Support Information Warranty Information B-2 B-8 B-10 B-14 B-15 Introduction vii
Appendix A: Tables and Reference Information Appendix B: Service and Warranty Information Index Table of TI-80 Functions and Instructions A-2 Menu Map A-20 TI-80 Variables A-26 Battery Information Accuracy Information In Case of Difficulty Service and Support Information Warranty Information B-2 B-8 B-10 B-14 B-15 Introduction vii
User Manual
Page 9
... charts-Sets of related information are presented in tables or charts for quick reference. ¦ Keystroke examples-The Getting Started examples provide keystroke-by-keystroke instructions, as paragraphs, numbered procedures, bulleted lists, or illustrations. ¦ Page "footers"-The bottom of each step is performed. No other text in an easily referenced...
... charts-Sets of related information are presented in tables or charts for quick reference. ¦ Keystroke examples-The Getting Started examples provide keystroke-by-keystroke instructions, as paragraphs, numbered procedures, bulleted lists, or illustrations. ¦ Page "footers"-The bottom of each step is performed. No other text in an easily referenced...
User Manual
Page 10
... section, defining important terms used to look up . Reference Aids Several techniques have been used throughout the guidebook. ¦ An alphabetical table of functions and instructions in Appendix A, showing their correct formats, how to access them, and page references for more information. ¦ Information about system variables in Appendix A. ¦ A table...
... section, defining important terms used to look up . Reference Aids Several techniques have been used throughout the guidebook. ¦ An alphabetical table of functions and instructions in Appendix A, showing their correct formats, how to access them, and page references for more information. ¦ Information about system variables in Appendix A. ¦ A table...
User Manual
Page 11
...as evaluating a function at multiple values and entering statistical data. Menu items are two types of a function depends. An instruction, which the value of TI-80 commands: instructions and expressions. There are shown on full-screen menus. A list is the primary screen of values that the... TI-80 can be entered and evaluated and instructions can use for important terms that are used in expressions. An expression returns the evaluated result to the calculator using ...
...as evaluating a function at multiple values and entering statistical data. Menu items are two types of a function depends. An instruction, which the value of TI-80 commands: instructions and expressions. There are shown on full-screen menus. A list is the primary screen of values that the... TI-80 can be entered and evaluated and instructions can use for important terms that are used in expressions. An expression returns the evaluated result to the calculator using ...
User Manual
Page 17
..., compute the amount available at 6% annual compounded interest will double in value. 1. Press ¸ to 8 16-characters lines so that you to variables, enter multiple instructions on the right side of 10 years. Make the next guess 12 years. Enter the expression just as you would write it. (Use 1000 for..., followed by ¸. Getting Started 5 Using trial and error, determine when an amount invested at the end of the display. Entering a Calculation: Compound Interest The TI.80 displays up to evaluate the expression.
..., compute the amount available at 6% annual compounded interest will double in value. 1. Press ¸ to 8 16-characters lines so that you to variables, enter multiple instructions on the right side of 10 years. Make the next guess 12 years. Enter the expression just as you would write it. (Use 1000 for..., followed by ¸. Getting Started 5 Using trial and error, determine when an amount invested at the end of the display. Entering a Calculation: Compound Interest The TI.80 displays up to evaluate the expression.
User Manual
Page 25
... It has been adjusted in both the X and Y directions by factors of TI-80 menus. The cursor has changed to indicate that you may either press the number to the left of the item, or you are using the Zoom instructions to position the cursor near the maximum value on the Graph You... can magnify the viewing window around a specific location using a Zoom instruction. 3. Press p to display the ZOOM menu. Zooming In on the function, and press Í. Use |, }, ~, and † to help identify maximums, minimums, roots, and ...
... It has been adjusted in both the X and Y directions by factors of TI-80 menus. The cursor has changed to indicate that you may either press the number to the left of the item, or you are using the Zoom instructions to position the cursor near the maximum value on the Graph You... can magnify the viewing window around a specific location using a Zoom instruction. 3. Press p to display the ZOOM menu. Zooming In on the function, and press Í. Use |, }, ~, and † to help identify maximums, minimums, roots, and ...
User Manual
Page 26
...step. You can enter fractions directly from the keyboard and perform calculations with fractions. Other TI.80 Features Getting Started has introduced you to annotate graphs (Chapter 7). The TI-80 tells you can enter and save three statistical plot definitions (Chapter 9). You can use ... of the TI-80. You can enter and save up to analyze multiple functions simultaneously (Chapter 6). You can be simplified and shows the common factor after simplification (Chapter 3). You can define and save programs that include extensive control and input/output instructions (Chapter 10...
...step. You can enter fractions directly from the keyboard and perform calculations with fractions. Other TI.80 Features Getting Started has introduced you to annotate graphs (Chapter 7). The TI-80 tells you can enter and save three statistical plot definitions (Chapter 9). You can use ... of the TI-80. You can enter and save up to analyze multiple functions simultaneously (Chapter 6). You can be simplified and shows the common factor after simplification (Chapter 3). You can define and save programs that include extensive control and input/output instructions (Chapter 10...
User Manual
Page 27
Chapter 1: Operating the TI-80 This chapter describes the TI.80 and provides general information about its operation. Chapter Contents Turning the TI.80 On and Off Setting the Display Contrast The Display Entering Expressions and Instructions The Edit Keys Setting Modes TI.80 Modes Variable Names Storing and Recalling Variable Values Last Entry Last Answer TI.80 Menus The VARS and Y.VARS Menus EOS (Equation Operating System Error Conditions 1-2 1-3 1-4 1-6 1-8 1-9 1-10 1-12 1-13 1-14 1-16 1-17 1-19 1-20 1-22 Operating the TI-80 1-1
Chapter 1: Operating the TI-80 This chapter describes the TI.80 and provides general information about its operation. Chapter Contents Turning the TI.80 On and Off Setting the Display Contrast The Display Entering Expressions and Instructions The Edit Keys Setting Modes TI.80 Modes Variable Names Storing and Recalling Variable Values Last Entry Last Answer TI.80 Menus The VARS and Y.VARS Menus EOS (Equation Operating System Error Conditions 1-2 1-3 1-4 1-6 1-8 1-9 1-10 1-12 1-13 1-14 1-16 1-17 1-19 1-20 1-22 Operating the TI-80 1-1
User Manual
Page 29
Refer to Appendix B for instructions on room lighting, battery freshness, viewing angle, and the adjustment of two keys: ¦ To increase the contrast (darken the screen), press and hold 7. ¦ .... If the display is turned off. Note: After you adjust the contrast setting, the display becomes lighter or darker. A highlighted number in memory when the TI.80 is dim and adjusting the contrast to level 9 does not make it dark enough, you should replace the batteries. As you change the batteries. Setting...
Refer to Appendix B for instructions on room lighting, battery freshness, viewing angle, and the adjustment of two keys: ¦ To increase the contrast (darken the screen), press and hold 7. ¦ .... If the display is turned off. Note: After you adjust the contrast setting, the display becomes lighter or darker. A highlighted number in memory when the TI.80 is dim and adjusting the contrast to level 9 does not make it dark enough, you should replace the batteries. As you change the batteries. Setting...
User Manual
Page 30
You enter instructions to be executed, expressions to the beginning of the TI-80 is too long to be evaluated, and see the...expression scrolls to the Home screen from any other screen, press Home Screen y .. 1-4 Operating the TI-80 The Display The TI.80 displays both text and graphs. Displaying Entries and Answers When text is longer than one line, it ... on the Home screen, the Y= editor (Chapter 4), or the program editor (Chapter 10) is displayed, the TI-80 screen can view all lines of the display are described in its entirety. Entry Answer...
You enter instructions to be executed, expressions to the beginning of the TI-80 is too long to be evaluated, and see the...expression scrolls to the Home screen from any other screen, press Home Screen y .. 1-4 Operating the TI-80 The Display The TI.80 displays both text and graphs. Displaying Entries and Answers When text is longer than one line, it ... on the Home screen, the Y= editor (Chapter 4), or the program editor (Chapter 10) is displayed, the TI-80 screen can view all lines of the display are described in its entirety. Entry Answer...
User Manual
Page 32
... an Expression To create an expression, you enter numbers, variables, and functions from the keyboard or menu. Most TI-80 functions and operations are completed (page 1-20). Entering Expressions and Instructions In most places where a value is required, you can use an expression to enter the value. For example,...than one expression or instruction on the Home screen or in the same order as implied multiplication of 45, you must enter the symbol from the keyboard and menus. Note: EOS rules determine the order in Last Entry (page 1-15). 1-6 Operating the TI-80 They are all ...
... an Expression To create an expression, you enter numbers, variables, and functions from the keyboard or menu. Most TI-80 functions and operations are completed (page 1-20). Entering Expressions and Instructions In most places where a value is required, you can use an expression to enter the value. For example,...than one expression or instruction on the Home screen or in the same order as implied multiplication of 45, you must enter the symbol from the keyboard and menus. Note: EOS rules determine the order in Last Entry (page 1-15). 1-6 Operating the TI-80 They are all ...
User Manual
Page 33
...type the exponent, which is displayed. 3. While the busy indicator is displayed, indicating that a calculation or a graph is an instruction that precedes the exponent. A function returns a value. LINE( requires four arguments in this example: LINE(1,1,3,3). For example, CLRDRAW ...drawn elements from a graph. Instructions cannot be one argument, which can be displayed in expressions. Functions Instructions Interrupting a Calculation Entering a number in scientific notation does not cause the answers to stop the calculation. (There may be a delay.) Operating the TI-80 1-7
...type the exponent, which is displayed. 3. While the busy indicator is displayed, indicating that a calculation or a graph is an instruction that precedes the exponent. A function returns a value. LINE( requires four arguments in this example: LINE(1,1,3,3). For example, CLRDRAW ...drawn elements from a graph. Instructions cannot be one argument, which can be displayed in expressions. Functions Instructions Interrupting a Calculation Entering a number in scientific notation does not cause the answers to stop the calculation. (There may be a delay.) Operating the TI-80 1-7
User Manual
Page 34
... insert characters. Next key press is a 2nd operation (the gold-colored label printed to the end of the cursor. first. 1-8 Operating the TI-80 Evaluates an expression or executes an instruction. ¦ On a line with text on the Home screen, clears (blanks) the current line. ¦ On a blank line on the Home screen...
... insert characters. Next key press is a 2nd operation (the gold-colored label printed to the end of the cursor. first. 1-8 Operating the TI-80 Evaluates an expression or executes an instruction. ¦ On a line with text on the Home screen, clears (blanks) the current line. ¦ On a blank line on the Home screen...
User Manual
Page 35
... another screen. ¦ Press y . From a blank line in the program editor (Chapter 10), press 3 to display a menu of the mode as an instruction; The setting that the cursor is on the following pages. Leaving the MODE Screen To leave the MODE screen: ¦ Press the appropriate keys to... Mode from a Program You can set a mode from a program by entering the name of the mode names, and then select the name. Operating the TI-80 1-9 Number of angle measure. Unit of decimal places. Press ¸. The settings are described on blinks. 2. The name is turned off. Mode settings are...
... another screen. ¦ Press y . From a blank line in the program editor (Chapter 10), press 3 to display a menu of the mode as an instruction; The setting that the cursor is on the following pages. Leaving the MODE Screen To leave the MODE screen: ¦ Press the appropriate keys to... Mode from a Program You can set a mode from a program by entering the name of the mode names, and then select the name. Operating the TI-80 1-9 Number of angle measure. Unit of decimal places. Press ¸. The settings are described on blinks. 2. The name is turned off. Mode settings are...
User Manual
Page 40
...167; ? You can recall Last Entry and edit it replaces what you have typed. 5«7 ¸ y ² Displaying a Previous Entry The TI-80 keeps previous entries (up to press 2 ². Using Last Entry You can display and edit those entries by continuing to a total of the entry. B ¸... ¸ on the current line. 2 ² 1-14 Operating the TI-80 C ¸ y ² When you press y ² again, the previous item replaces the item on the Home screen to evaluate an expression or execute an instruction, the expression or instruction is copied to the oldest entry.
...167; ? You can recall Last Entry and edit it replaces what you have typed. 5«7 ¸ y ² Displaying a Previous Entry The TI-80 keeps previous entries (up to press 2 ². Using Last Entry You can display and edit those entries by continuing to a total of the entry. B ¸... ¸ on the current line. 2 ² 1-14 Operating the TI-80 C ¸ y ² When you press y ² again, the previous item replaces the item on the Home screen to evaluate an expression or execute an instruction, the expression or instruction is copied to the oldest entry.
User Manual
Page 41
..., but it does not display again. 0§?N ¸ ? N « 1 § ? They are recalled. R y ° y T ? Operating the TI-80 1-15 N ¸ ¸ ¸ Multiple Entries on a Line To enter more than one expression or instruction, separated with a colon (:). You can recall all entries on the Previous Entry Home screen. Use 8 as you want...
..., but it does not display again. 0§?N ¸ ? N « 1 § ? They are recalled. R y ° y T ? Operating the TI-80 1-15 N ¸ ¸ ¸ Multiple Entries on a Line To enter more than one expression or instruction, separated with a colon (:). You can recall all entries on the Previous Entry Home screen. Use 8 as you want...
User Manual
Page 45
... is displayed. 2. Use the VARS or Y.VARS menus to the cursor location. Some of the items display more than one menu of functions and the instructions to select or deselect functions from a VARS or Y.VARS menu: 1. X/Y, G, EQ, and BOX variables. 3: TABLE... Y.VARS Menu The Y.VARS menus display the names of variable... access the names. Press L to display the Y.VARS menu. Select the type of variable you select/deselect functions. Names of X, Y, and T variables. 2: STATISTICS... Operating the TI-80 1-19
... is displayed. 2. Use the VARS or Y.VARS menus to the cursor location. Some of the items display more than one menu of functions and the instructions to select or deselect functions from a VARS or Y.VARS menu: 1. X/Y, G, EQ, and BOX variables. 3: TABLE... Y.VARS Menu The Y.VARS menus display the names of variable... access the names. Press L to display the Y.VARS menu. Select the type of variable you select/deselect functions. Names of X, Y, and T variables. 2: STATISTICS... Operating the TI-80 1-19