Using AT89S51 microcontroller as the core device, a digital clock timing system, the system displays a four bit digital type digital tube, respectively, show the hours and minutes, can adjust the current time, and the input time at any time in the regular time, there will be time to prompt tone.

Filename	Size	Update
多点定是数字钟的设计.docx	175228	2018-03-20

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