利用MCS-51单片机内部的定时／计数器、中断系统、以及外围的按键和LED显示器等部件，设计一个单片机电子时钟。设计的电子时钟通过数码管显示，并能通过按键实现设置时间和暂停、启动控制等。-The use of MCS-51 microcontroller' s internal timer/counter, interrupt system and the external buttons and LED displays and other components to design a microcontroller electronic clock. The design of electronic clock through the digital tube display, and can be key to achieve set-up time and the suspension, start control.