MCU is short for Microcontroller Unit, which is a small single-chip computer that can control and adjust peripheral circuits. It contains one or more microcontrollers, a set of internal and external memory with specific functions, external I\/O interfaces, and some necessary peripheral circuits such as clocks and interfaces. The MCU is a very powerful tool that can be used in different applications such as automotive control, home appliance control, industrial control, and a variety of other mechanical control and automation applications.
MCU can be programmed to achieve control without the need for complex electronic circuits, which can reduce the size of integrated circuit chips and reduce costs.