A microcontroller unit (MCU) is one of the core components of modern electronic information intelligent control, also known as a single-chip microcomputer or single-chip microcomputer. It is a microcomputer that integrates main components such as a central processing unit (CPU), memory, timer/counter, various analog signal acquisition modules, and communication interfaces on a chip. The function of MCU is signal processing and control. It is widely used in household appliances, consumer electronics, medical equipment, computers, industrial control, automotive electronics, etc.