According to the characteristics of single chip microcomputer scheme, the application of single chip microcomputer is divided into single machine application and multi machine application. In an application system, only one single chip microcomputer is used, which is called stand-alone application. The application scope of single-chip microcomputer includes:

(1) Measurement and control system. Single chip microcomputer can form various less complex industrial control systems, adaptive control systems and data acquisition systems to achieve the purpose of measurement and control.

(2) Intelligent instrument. The original measurement and control instruments are transformed with single chip microcomputer to promote the development of instruments in the direction of digitization, intelligence, multi-function, integration and flexibility.

(3) Mechatronics products. The combination of single chip microcomputer and traditional mechanical products simplifies the structure of traditional mechanical products and makes the control intelligent.

(4) Intelligent interface. In the computer control system, especially in the larger industrial measurement and control system, the single chip microcomputer is used for interface control and management, and the parallel work of single chip microcomputer and host computer greatly improves the running speed of the system.

(5) Intelligent civil products. For example, in many products such as household appliances, toys, game consoles, audio-visual equipment, electronic scales, cash registers, office equipment, kitchen equipment and so on, the introduction of single-chip microcomputer controller not only greatly enhances the function and performance of the products, but also obtains good use results.