有数字时钟，日历和注意的地区，每一天。
It has digital clock, calendar and note's area for every day.
本文介绍了DS1302日历时钟芯片的工作原理和编程方法。
This paper introduces the work principle and program method of DS1302 trickle charge timekeeping chip.
本文介绍了DS1302日历时钟芯片的工作原理和编程方法。
This paper introduces the work principle and program method of DS1302 trickle charge timekeeping chip.
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