51单片机基于C语言控制液晶LCD显示时钟并且可以作为电子钟功能-Electronic clock

用51单片机和时钟pcf8563制作电子钟方案，对初学者有帮助-51 And with the clock pcf8563 making electronic clock program, to help beginners

基于实时时钟芯片DS1302和51单片机的红外遥控电子钟，带有电路图和源码-Based on the real-time clock chip DS1302 and 51 single infrared remote control electronic clock with circuit diagrams and source code