Texas Instruments TI-89 사용자 설명서

Connectivity

731

Stopping the Program

Because the

Chat

program sets up an infinite loop on both devices, press

´ (on both

devices) to break the program. If you press

N to acknowledge the error message, the

program stops on the Program I/O screen. Press

‡ or N to return to the Home

screen.

Upgrading the Operating System (OS)

You can upgrade the OS on your TI-89 Titanium using your computer. You can also
transfer the OS from one unit to another identical model (for example, from a TI-89
Titanium to a TI-89 Titanium or from a Voyage™ 200 to a Voyage™ 200).

Installing OS software resets all device memory to the original factory settings. This
means that all user-defined variables (in both RAM and the user data archive), functions,
programs, lists, and folders (except the Main folder) will be deleted. It is possible that
Flash applications could also be deleted. You should use TI Connect software to back up
your data to your computer before installing a new OS on your calculator.

See the important information concerning batteries before performing an OS upgrade.

Important Operating System Download Information

New batteries should be installed before beginning an OS download.

If you are operating your TI-89 Titanium in a language other than English, you should
ensure that you have the most current localizer application installed when you upgrade
the OS software. If you do not have the most current localizer installed, prompts, error