Single chip microcomputer has the advantages of small size, strong control function, low power consumption, strong environmental adaptability, flexible expansion and convenient use. It can be used to form a variety of control systems, data acquisition systems, communication systems, signal detection systems, wireless sensing systems, measurement and control systems, robots and other application control systems. For example, intelligent management of factory assembly lines, intelligent control of elevators, various alarm systems, networking with computers to form a secondary control system, etc.