k03p3 chip refers to the microcontrol unit, Also known as single-chip microcomputer or single-chip microcomputer, it is to reduce the frequency and specifications of the central processor appropriately, and the memory, counter, USB, A\/D conversion, UART, PLC, DMA and other peripheral interfaces, and even LCD driver circuits are integrated on a single chip, forming a chip-level computer, for different applications to do different combination control.