Appendix B: Technical Reference 918
Unit System
Lets you enter a unit for values in an expression, such as 6_m * 4_m or 23_m/_s * 10_s,
convert values from one unit to another within the same category, and create your own
user-defined units.
Custom Units
Lets you select custom defaults. This mode is dimmed until you select Unit System,
3:CUSTOM.
Language
Lets you localize the TI-89 Titanium / Voyage
™ 200 into one of several languages,
depending on which language Flash applications are installed.
Apps Desktop
Lets you turn the display of the Apps desktop on or off.
1:SI Select SI for the metric system of
measurements
2:ENG/US Select ENG/US for the non-metric system of
measurements
3:CUSTOM Allows you to select custom defaults.
1:English Default language included with the TI-89
Titanium / Voyage™ 200 operating system
(OS).
2: —
(language Flash
applications)
Alternate languages are available only if the
respective language Flash applications have
been installed.
ON Displays the navigable Apps desktop. The Apps desktop
appears when you:
• Press O.
• Turn the unit on after it has been turned off by
pressing 2 ®.
• Press 2 K from an App that is displayed in full
screen mode.
OFF • Does not display the navigable Apps desktop.
• The unit defaults to the calculator Home screen.
• The calculator Home screen displays when you press
2 K.
• The APPLICATIONS menu displays when you press
O.