To provide a controller for automatic vending machine with a function capable of being generally used for various amusement devices and automatic vending machines and which is mounted on one substrate.

A mother board 10 is provided with a video capture circuit 123 and an I/O circuit 134 to input and output digital data with external equipment in addition to structure of a general purpose personal computer system. Since the I/O circuit 134 is provided with a control part 1341 to perform a control logic and coin control, two optical insulated drivers 1342, 1343 to input and output data electrically insulated by an electrooptic converting element and photoelectric converting element and two connectors DI01 and DI02 to which the external equipment is connected, even the external equipment such as a motor for which power supply voltage different from a controller is used and to which large capacity of current is supplied when a load is applied can be connected with the I/O circuit 134.