Chapter 1: Getting to Know Your TI-84 Plus
5
Using the ` and a Keys
The secondary function associated with each key appears
in blue above the key. When you press the ` key, the
character, abbreviation, or word printed above the other
keys becomes active for the next keystroke. For example,
when you press ` and then i, the MATRIX menu
comes up.
The a key allows you to access the green letters A
through Z located above many of the keys. The a
key also allows you to access the shortcut menus associ-
ated with the 2.53MP Operating System. For example,
press a∏ to access the FRAC shortcut menu.
The other shortcut menus are aπ (FUNC),
a∫ (MTRX), and aª (YVAR).
Finally, the key sequence a∑ is used to solve
equations with the Solver feature. The Solver feature is
found in the MATH submenu.
Adjusting the Display
You can adjust the contrast (or darkness) of the screen
by following these steps.
1. Press and release the ` key.
2. Press and hold : to darken the screen or press
and hold ; to lighten the screen.
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