Description: 1) the use of 51 single-chip microcomputer as the master controller of an electronic stopwatch, the four LED displays. 2) after the power or RESET display 000.0. 3) When pressing the START button, the stopwatch as the use, display range is :000.0-999 .9 seconds, when pressing the STOP button, the stopwatch to stop running, and to retain the location of the stop show the same time.
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跑表.asm
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