MCU stock refers to a listed company that makes mcu chips. MCU chip refers to the micro control unit, also known as A single chip microcomputer or single chip microcomputer, is the frequency and specifications of the central processor to do appropriate reduction, and memory, counter, USB, A\/D conversion, UART, PLC, DMA and other peripheral interfaces, and even LCD driver circuit are integrated on a single chip, forming a chip level computer. Different combinations of controls for different applications.