这是一个基于51单片机的DS1302_实时时钟驱动程序，来源于我自己买的开发版，我有用过绝对没问题的。,This is a single chip based on 51 real-time clock DS1302_ driver, from the development to buy my own version, I have used absolutely no problem.

keiluvision 3的单片机汇编语言程序 非常有用！！ 是关于万年历时钟的控制-keiluvision 3 microcontroller assembly language program is very useful! ! Clock on the calendar control

用c语言编写的数字时钟，有时分秒显示，并且时分秒都可调，误差较小。用AT89C51单片机连接数码管显示，程序用keil编写，实验仿真有protel99se实现，已验证成功-With the c language of the digital clock, sometimes minutes and seconds display, and when the minutes and seconds are adjustable, error smaller. AT89C51 microcontro