利用80C51单片机及数码管显示器设计一个简单电子时钟，由于用LED数码管显示数据，在夜晚或黑暗的场合里也可以使用，具有一定的实用性。-Using 80C51 Microcontroller and digital tube display design of a simple electronic clock, as a result of using digital tube LED display data, at night or in dark places can also be used with a certain degree of practicality.