Texas Instruments Titanium TI-89 User Manual

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5. Go to the Home screen. Enter the
program name, followed by a set of
parentheses.
You must include ( ) even when there are
no arguments for the program.
The program displays a dialog box with
the prompt specified in the program.
Press " 2 ™ PROG j 1 c
d ¸
6. Type 5 in the displayed dialog box.
Press 5
7. Continue with the program. The
Disp command displays the result on the
Program I/O screen.
The result is the sum of the integers from
1 through 5.
Although the Program I/O screen looks
similar to the Home screen, it is for
program input and output only. You
cannot perform calculations on the
Program I/O screen.
Press ¸ twice
Steps and keystrokes Display
prog1()
Output from
other programs
may still be on
the screen.
Result of integer 5

Texas Instruments Titanium TI-89 Specifications

General

Display Type	LCD
Display Resolution	160 x 100 pixels
Memory	188 KB RAM, 2.7 MB Flash ROM
Type	Graphing Calculator
Display	Monochrome
Processor	Motorola 68000
Processor Speed	12 MHz
Power Source	4 AAA batteries
Connectivity	USB
Programming	TI-BASIC, Assembly
Operating System	AMS (Advanced Mathematics Software)