Texas Instruments TITANIUM TI-89 User Manual
Page 8
Getting Started
8
Note:
® is the second function of the ´ key.
The calculator’s Automatic Power Down™ (APD™) feature prolongs battery life by
turning the calculator off automatically following several minutes of inactivity. When you
turn on the calculator after APD:
•
The display, cursor, and any error conditions are exactly the same as before APD.
•
All settings and memory contents are retained.
Note:
APD does not occur if a calculation or program is in progress, unless the program
is paused. If a program is running but waiting for a key press, APD will occur after
several minutes of inactivity.