Texas Instruments TITANIUM TI-89 - Manual (Page 145)

Operating the Calculator 145
Operating the Calculator Operating the Calculator Operating the Calculator Operating the Calculator
Turning the Calculator On and Off Turning the Calculator On and Off Turning the Calculator On and Off Turning the Calculator On and Off
You can turn your graphing calculator on and off manually by using the ´ and 2 ®
(or 8 ®) keys. To prolong battery life, the APD™ (Automatic Power Down™) feature
lets the calculator turn itself off automatically.
Turning the Calculator On Turning the Calculator On Turning the Calculator On Turning the Calculator On
Press ´.
• If you turned the unit off by pressing 2 ®, the unit returns to either the Apps
desktop or the Home screen.
• If you turned the unit off by pressing 8 ® or if the unit turned itself off through
APD, the unit returns to whichever application you used last.