Texas Instruments Titanium TI-89 User Manual

Getting Started 71
3. Replace the battery cover on the calculator. The cover should snap into place.
Replacing the AAA (alkaline) batteries
Replacing the AAA (alkaline) batteriesReplacing the AAA (alkaline) batteries
Replacing the AAA (alkaline) batteries
As the batteries lose power, the display begins to dim, especially during calculations. If
you find yourself increasing the contrast frequently, replace the AAA alkaline batteries.
The status line also gives battery information.
Before replacing the batteries, turn off the TI-89 Titanium by pressing 2® to avoid
losing information stored in memory. Do not remove both the back-up battery and the
AAA alkaline batteries at the same time.
Indicator Meaning
Batteries are low.
Replace batteries as soon as possible.

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)