利用51单片机也数码管实现电子钟的功能，需要用到Proteus 7 Professional画原理图。-Use of 51 SCM also realize the function of digital tube electric clock, need to use Proteus 7 Professional painting principle diagram.

采用51单片机定时中断方式（T1方式2）设计，电子钟，显11-58-48秒，8位数码管。用汇编编写，带有仿真电路图-51 microcontroller using timer interrupt mode (T1 mode 2) design, electronic bell, which was 11-58-48 seconds, eight digital tube. Written in assembly with circuit simulation