基于51单片机的数字时钟，可用按键设置时、分、秒的值，并在选中时呈现闪烁的效果，同时给出了Protues的仿真电路图和使用说明，读者可直接仿真调试。-Based on 51 single-chip digital clock, a pushbutton set hours, minutes and seconds values​ ​ , and showed flashes of the selected effect, while the simulation is given Protues circuit and instructions for use, the reader can directly simulate debugging.