说明：  这是一个用c51做的数字钟源代码,实现了时间设置,闹铃设置等一系列钟表的功能,并付上了硬件原理图,供大家学习和参考,我的qq:9577287
(This is a decoder to do with the number of Zhong Yuan code and realized the time settings, Alarms set up a series of watches function and pay its hardware schematics, for all learning and reference, I qq : 9577287)