51基本外设的初始化跟应用函数都有了，有ps2，iic，uart，看门狗，ds1302，ds18b20等，入门级别的东西很全了。-51 basic peripheral functions are initialized with the application, and there ps2, iic, uart, watchdog, ds1302, ds18b20 and so on, entry-level stuff was all the.

ds1302时钟芯片51单片机程序，自动更新时间-ds1302 51 time update automatic