Computer selection is accomplished through a setup menu which is displayed on the built in display panel. That's all there is to it. No software to load, no modifications to make. Input devices are connected to one of the three input connectors. The unit will accept either IBM or Apple compatible joysticks as well as any other two axis joystick with a resistance between 25,000 and 150,000 ohms.
Direct control is provided by using matrix keyboards.
Communication Aids can also be used. This means that the user can select the mode that matches his or her capabilities. Each mode requires a different skill level and provides different levels of efficiency. In Scan Mode, characters, keyboard commands and mouse control functions are displayed on the display panel. At its simplest level of operation, characters and groups of characters are blocked or underlined and the user signals his selection by closing a switch.