STC单片机是一款性价比非常高的单片机，它完全兼容MSC-51系列单片机，除此之外它自身还有很多功能，如：无法解密、低功耗、高速、高可靠、强抗静电、强抗干扰等。-STC MCU is a highly cost-effective single-chip microcomputer, it is fully compatible with MSC-51 microcontroller series, in addition to its own there are many features, such as : not declassified, low-power, high-speed, high reliability, strong anti-static, such as strong interference.