一个可设置时间的倒计时定时器（0到99） Set timer time Settings by ke

Title: 一个可设置时间的倒计时定时器（0到99）

Description: Set timer time Settings by keystroke k1 to k6, and start the countdown. Automatic alarm 3 times when the countdown reaches 0

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Filename Size Date
秒表.hex  1857  2017-12-17
程序1-定时器.c  3958  2017-12-17

Filename	Size	Date
秒表.hex	1857	2017-12-17
程序1-定时器.c	3958	2017-12-17

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