k Key Markings
Many of the calculator's keys are used to perform more than one function. The functions
marked on the keyboard are color coded to help you ﬁ nd the one you need quickly and
The following describes the color coding used for key markings.
Normally, once you press a and then a key
to input an alphabetic character, the keyboard
reverts to its primary functions immediately.
Press ! and then the key to perform the marked function.
Press a and then the key to perform the marked function.
If you press ! and then a, the keyboard
locks in alpha input until you press a again.