AT89C51是一种带4K字节闪烁可编程可擦除只读存储器（FPEROM—Falsh Programmable and Erasable Read Only Memory）的低电压，高性能CMOS8位微处理器，俗称单片机。-AT89C51 is a kind of programmable 4K byte scintillation-ROM can be erased (FPEROM - Falsh : navigation, and Programmable Read Only Memory ry) low-voltage, high-performance microprocessor CMOS8 spaces, commonly called SCM.