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- SCM
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- Update:
- 2012-11-26
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- dingdaozi
Description: Dual digital tube adjustable stopwatch. Because of single-chip I/O resources enough, so can be accessed by double-digital pipe into the static display, a total of two vaginal digital tube then separately at P1 (10 second) and P2 (second a bit) the mouth, they are the total cathode grounding, both keys then arranged at P3.2 (ten-digit adjusted) and P3.3 (single-digit adjusted) on, in order to facilitate the timing and use 12MHz crystal. In order to achieve accurate timing, selection of timer mode 2, each count of 250 heavy-duty one, that is, 250us, the definition of heavy-duty one count the number of integer variables, so that count is 4000 times a second
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