- Letters, numbers
- the same keys on the Socrates
- Esc
- MENU, also skips a cartridge's intro
- Enter
- ENTER
- Backspace
- ERASE
- Tab
- ANSWER
- ?
- HELP
- Arrow keys
- left joypad
- Numpad 8 4 6 2, 0
- right joypad and its red button
- Mouse
- click a tray on the tower to load its game; click keys, pads, PRESS latches, the power rocker; drag to look around
- Mouse System
- switch the tablet on with its green ON button, then drag the mouse across its mat and click its red buttons — CAD Professor needs it
- Mouse or joypad
- in touch screen mode, a switch above the pad: some menus are easier with the arrows