How do you make capital letters on ti-89 titanium?

Answer 1

The up arrow button (right above the [ALPHA] button) followed by [ALPHA] will turn on ALPHA-lock which is what you want versus (lowercase) alpha-lock. So in buttons,

[^] [ALPHA] [letters...]

Answer 2

To type capital letters on a TI-89 Titanium, press the ALPHA key followed by the letter you want to capitalize. For example, to type a capital A, press ALPHA then A.