Texas Instruments TI-89 Titanium Short User Manual

Getting Started 43
Batteries
The TI-89 Titanium uses four AAA alkaline batteries and a backup silver
oxide battery (SR44SW or 303). The backup battery is already installed,
and the AAA batteries are provided with your product.
Installing the AAA Batteries
1. Remove the battery cover from the back of the calculator.
2. Unwrap the four AAA batteries provided with your product and
insert them in the battery compartment. Arrange the batteries
according to the polarity (+ and -) diagram in the battery
compartment.
3. Replace the battery cover on the calculator. The cover should snap
into place.
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 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