51单片机驱动74164作显示的双定时电子钟，带设定时间存储功能和继电器输出，可控制电饭煲等大功率家电的启停，内有PROTEUS仿真。-51 74164 microcontroller driven timing for dual display electronic clock, set the time with memory function and relay outputs can control the start and stop large appliances such as rice cookers, there PROTEUS simulation.