说明：  文章介绍了美国Dallas公司推出的低功耗具有涓细电流充电能力的实时时钟芯片 DS1302的结构和工作原理及其在实时显示时间中的应用。它可以对年、月、日、星期、时、分、 秒进行计时，且具有闰年补偿等多种功能。并给出了DS1302在读写中的C51程序及流程图，以 及在调试过程中的注意事项。
(This paper introduces the Dallas company' s U.S. launch of low-power thin with a trickle charge current capability of real-time clock chip DS1302 structure and working principle and its application in real-time display time applications. It can be year, month, day, week, hours, minutes and seconds for time, and has multiple functions such as leap year compensation. And gives the DS1302 in read and write procedures and flow charts of the C51, and the debugging process considerations.)