Texas Instruments TI-82 User Manual - Page 189
PRGM I/O Input/Output Instructions
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PRGM I/O (Input/Output) Instructions The PRGM I/O (program input/output) instructions can be accessed only from within the program editor (press ~). They control input to and output from a program during execution. They allow you to enter values and display answers during program execution. PRGM I/O Menu CTL I/O EXEC 1: Input 2: Prompt 3: Disp 4: DispGraph 5: DispTable 6: Output( 7: getKey 8: ClrHome 9: ClrTable 0: PrintScreen A: Get( B: Send( Enter value or use free-moving cursor. Prompt for entry of variable values. Display text, value, or Home screen. Display the current graph. Display table. Display text at a specified position. Check the keyboard for a keystroke. Clear the display. Clear the current table. Print the current screen. Gets variable from another device. Sends variable to another device. Input ¦ ¦ Input without variable is used to display a graph on which you can use the free-moving cursor. Input with variable or "string" and variable is used to store a value to a variable. Displaying a Graph with Input Input without variable displays the current graph. You can move the freemoving cursor, which updates X and Y (and R and q in PolarGC FORMAT). The dotted-bar pause indicator is displayed. Press Í to resume execution. Storing a Variable Value with Input Input with variable prompts ? during execution. variable may be a real number, list, matrix or Y= function. Enter a value (which can be an expression) and press Í. The value is evaluated and stored to variable, and the program resumes execution. If variable is Yn or other Y= functions, enter " and then the expression, which will be stored to the Y= function as entered. Input variable You can display a string of up to 16 characters as a prompt. Enter a value and press Í. The value is stored to variable, and the program resumes execution. Input "string",variable Programming 13-13