2. In the device defined in claim 1, the interface including an electronic counter actuated by the high or low voltage output signal from the selected single contact of the computer port, said counter having a plurality of output connections no more than one of which is actuated at any selected time, said counter being sequenced by the high or low voltage output signal from the selected single contact of the microcomputer port to change which of its outputs is actuated, and the robot being connected to said counter so that different electrically-powered actions are effectd by actuation of different outputs of said counter.
1. In a computer-controllable robotic device using a multipurpose microcomputer including an output port having several discrete input and output contacts, such microcomputer having programming modifiable to control the computer to provide a high or low voltage output signal to a selected single output contact of such port, and a robot having a plurality of different electrically-powered actions, the improvement comprising an interface operably connectable between such microcomputer port and such robot and including power-controlling means for receiving the output signal from such selected single output contact of the microcomputer port and for supplying electric power to the robot for effecting various different selected electrically-powered actions of the robot as determined by the programming of the microcomputer without reference to or being affected by the voltage at any other output contact of the microcomputer output port.