Texas Instruments TI-89 Titanium User Manual

Operating the Calculator 179
• When defining a variable that you want to retain, use more than one character in the
name. This prevents it from being deleted inadvertently by
1:Clear a–z.
• For information about checking and resetting memory or other system defaults, refer
to Memory and Variable Management.
Using the Catalog Dialog Box
The CATALOG provides a way to access any built-in command (functions and
instructions) from one convenient list. In addition, the CATALOG dialog box lets you
select functions used in Flash applications or user-defined functions (if any have been
loaded or defined).
Displaying the CATALOG
To display the CATALOG dialog box, press:
½
The CATALOG defaults to „
Built-in, which displays an alphabetic list of all pre-
installed commands (functions and instructions).
Ê
Ë
Ì

Texas Instruments TI-89 Titanium Specifications

General

Display Type	LCD
Display Resolution	160 x 100 pixels
CPU	Motorola 68000
CPU Speed	16 MHz
RAM	256 KB
Flash ROM	2.7 MB
Programming Language	TI-BASIC, Assembly
Power Source	4 AAA batteries
Connectivity	I/O port
Dimensions	7.5 x 3.5 x 1 inches