SCM also known as single-chip microcontroller, it is not a complete one-chip logic function, but to a computer system integrated into a single chip. Speaking in general terms: a chip into a computer. 1. Application of Intelligent Instruments SCM This is one of the most widely used of the most active fields. Introduced in all kinds of instrumentation microcontroller, so intelligent instrumentation, automation and improve test accuracy, the hardware structure is simplified instrumentation to improve its cost performance. 2, mechanical and electrical integration of mechatronics product means a mechanical technology, microelectronic technology, computer technology, and its products and electronic products with intelligent features. It is the direction of development of the machinery industry. 3, the application of single-chip real-time control system is widely used in a variety of real-time process control systems, such as industrial process control, process monitoring, aerospace, intermittent weapons, robotic systems and other real-time control systems. MCU real-time data processing and control system to ensure the system works in the best condition, improve the quality and efficiency of the system products. 4, Application in people's lives at home and abroad has been widely used furniture instead of the traditional single-chip control circuit, for example, washing machines, refrigerators, air conditioners, microwave ovens, rice cookers, radios, audio and video, fans and many advanced electronic toys accompanied by a microcontroller. 5. Application of SCM in other areas is also widely used in office automation, business marketing, security and defense, automotive and communications systems, computer peripherals, fuzzy control and other fields. 51 single just one of them.