Single chip microcomputer four-way control device for brain health instrument

The invention discloses a single chip microcomputer four-way control device for a brain health instrument. The single chip microcomputer four-way control device comprises a single chip microcomputer, a serial port chip and a four-way control unit are accessed to the single chip microcomputer, and a load is accessed to each way of the control unit. According to the single chip microcomputer four-way control device for the brain health instrument, the advanced single chip microcomputer STC89C52RC is used as a control module, and the serial port chip RS232 is used as a communication method so that output signal sources which can be received by an upper computer is diversified, and the intelligent, high-speed and integrated control is achieved; and simultaneously, a photoelectricity isolation element MOC3023, a photoelectricity isolation element 4N25 and a biphase silicon controlled rectifier with a model of Z0409F are used so that the functions that signals are isolated and high voltage is controlled by low voltage are achieved.