基于单片机的数字电子钟程序，数码管显示小时-分钟-秒，含仿真电路图，可以显示00-00-00到23-59-59，运行顺利通过。-Microcontroller-based digital electronic clock procedures, digital display hours- minutes- seconds, with circuit simulation can show 00-00-00 to 23-59-59, run smoothly.