本实验主是以51单片机组的LCD1602简易的电子钟，时钟源主要是以单片机内部的定时器产生的！本程序来自单片机教程网：http://www.mcujc.com-In this study, the main based on 51 single-chip group LCD1602 simple electronic clock, the clock source is generated by the internal microcontroller timer This program fr