Texas Instruments TITANIUM TI-89 - Manual (Page 575)

Programming 575
Note: To clear any previous output, enter the Clr [ O command in your program. You can
also execute Clr [ O from the Home screen.
When a program stops on the Program I/O screen, you need to recognize that it is not
the Home screen (although the two screens are similar). The Program I/O screen is
used only to display output or to prompt the user for input. You cannot perform
calculations on this screen.
Note: If Home screen calculations don’t work after you run a program, you may be on the
Program I/O screen.
Leaving the Program I/O Screen Leaving the Program I/O Screen Leaving the Program I/O Screen Leaving the Program I/O Screen
From the Program I/O screen:
• Press ‡ to toggle between the Home screen and the Program I/O screen.
– or –
• Press N, 2 K, or
@
"
"to display the Home screen.
– or –
• Display any other application screen (with O, 8 #, etc.).
Last output
On the Program I/O screen:
‡
toolbar is available; all
others are dimmed.
There is no entry line.