电子钟在生活中应用非常广泛，而一种简单方便的数字电子钟则更能受到人们的欢迎。所以设计一个简易数字电子钟很有必要。本电子钟采用ATMEL公司的AT89S52单片机为核心，使用12MHz 晶振与单片机AT89S52 相连接,通过软件编程的方法实现以24小时为一个周期，同时8位7段LED数码-Electronic clock is widely used in life, and a simple and convenient digital clock is more welcomed by the people. So designing a simple digital clock is necessary. The electronic clock uses ATMEL Corporation AT89S52 microcontroller as the core, using 12MHz crystal is connected with the microcontroller AT89S52 through software programming method to achieve a 24-hour cycle, while eight 7-segment LED