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.

是51单片机常用头文件定义，直接调用就可以，包括：1602液晶，12864液晶，5110屏，I2C,UART,精确延时函数，PWM调速，DS1302，DS18B20-51 microcontroller used header file defines direct call can include: 1602 LCD, 12864 LCD, 5110 screen, I2C, UART, precision delay function PWM speed control, DS1302, D

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