Need an 8 LED digital display to display time (tube) second, The show started in the initial input to run the program after experimental box, Press any key after every time, a change that value (once every 60 seconds for a minute, 60 points, 24 hours after an hour reset) When can display of six seconds, For 60 seconds, can be reset to zero, and make a minute, For 60 minutes, can be reset to zero, and make a hour, 24 hours, automatic reset to zero. LED digital display monitor cycle when tube of dynamic value determined. Now display process, according to A key to offset the initial, According to B key stoppage time, click again from the start time, D, E, F key respectively, minutes and seconds clear hour corresponding two.

计时时钟1.doc

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