Description: * 1602LCD show** K3--- stopwatch control buttons (p3.4)** When the first press, start running, the second press, the suspension of time.** Press the third time, the cumulative time, fourth press, the suspension of time.** K4--- Clear button (p3.5)** in any state, click the K4, will be cleared
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1602LCDstopwatch.asm
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