Management, elevator intelligent control, various alarm systems, and computer networking to form a secondary control system. 3. Application in household appliances It can be said that the current household appliances are basically controlled by single chip microcomputer, ranging from rice cookers, washing machines, refrigerators, air conditioners, color TVs and other audio-visual equipment to electronic scales. 4. Application in computer network and communication field. Modern single-chip computers generally have communication interfaces, which can communicate with computers conveniently, providing excellent material conditions for the application between computer networks and communication equipment. Now the communication equipment has basically realized the intelligent control of single chip microcomputer, from mobile phones, telephones, small program-controlled exchanges, building automatic communication call systems, train wireless communication, to mobile phones, trunking mobile communication, radios, etc., which can be seen everywhere in daily work. 5. Application of Single Chip Microcomputer in the field of medical equipment Single chip microcomputer is also widely used in medical equipment, such as medical ventilators, various analyzers, monitors, ultrasonic diagnostic instruments, sickbed call systems, etc. 6. Modularization is applied to various large electrical appliances. Some special single-chip microcomputers are designed to achieve specific functions, so that they can be modularized in various circuits without users knowing their internal structures. For example, music integrated single chip microcomputer, seemingly simple function, miniature in pure electronic chip (different from the principle of tape drive), needs complex computer-like principle. For example, music signals are stored in digital form in a memory (similar to a ROM), read by a microcontroller and converted into analog music electrical signals (similar to a sound card). In large-scale circuits, this modular application greatly reduces the size, simplifies the circuit, reduces the damage and error rate, and is also convenient for replacement. 7. Application of Single Chip Microcomputer in the field of automobile equipment Single chip microcomputer is widely used in the field of automobile electronics, such as engine controller in automobile, intelligent electronic controller of automobile engine based on CAN bus, GPS navigation system, abs anti-lock braking system and braking system. In addition, single-chip microcomputer is widely used in industry and commerce, finance, scientific research, education, national defense and aerospace.