Entering Data from the Keypad You can enter data by clicking MB1 on the Calculator display buttons or by typing at the keypad. The following table indicates the keypad keys that correspond to Calculator's display buttons. Display Button Keypad Key 0 to 9 Same key on the keypad + , - - = Enter . . PF1 * / PF2 +/- PF3 % PF4 Additional topics: * Performing Arithmetic Functions * Clearing the Displays * Using Memory * Exiting Calculator * Using Calculator's Menus * Overview of Calculator