A simple stopwatch function is realized with 8031 singlechip and eight segments are used to display it. Press the start key, regardless of the original value, start from zero. Stop when the stop button is pressed, and the number is kept unchanged. The maximum display time is 9 seconds after the stop, the number is kept as "9". After pressing the reset button, the number shows "0".

Filename	Size	Update
简易秒表设计.docx	395733	2018-03-20

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