单片机（Microcontrollers）是一种集成电路芯片，是采用超大规模集成电路技术把具有数据处理能力的中央处理器CPU、随机存储器RAM、只读存储器ROM、多种I/O口和中断系统、定时器/计数器等功能（可能还包括显示驱动电路、脉宽调制电路、模拟多路转换器、A/D转换器等电路）集成到一块硅片上构成的一个小而完善的微型计算机系统，在工业控制领域广泛应用。从上世纪80年代，由当时的4位、8位单片机，发展到现在的300M的高速单片机-Microcontrollers (Microcontrollers) is an integrated circuit chip, is the use of ultra-large-scale integrated circuit technology to have data processing capabilities of the central processing unit CPU, random access memory RAM, read-only memory ROM, a variety of I/O port and interrupt system,/Counter and other functions (which may also include display driver circuit, pulse width modulation circuit, analog multiplexer, A/D converter and other circuits) integrated into a silicon chip to form a small and complete micro-computer system, Control field widely used. From the last century 80 s, by the then 4, 8-bit microcontroller, the development of the current 300M high-speed single-chip