用51单片机控制实时时钟芯片DS1302，显示小时，分，钟，秒，天等-51 single-chip control with real-time clock chip DS1302, show hours, minutes, seconds, days, etc.

DS1302是一款功能强大的实时时钟芯片，本程序是在51单片机上实现DS1302功能-DS1302 is a powerful real-time clock chip, the process is to achieve single-chip microcomputer in 51 functional DS1302