To record start time and finish time and their difference
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送交者: HunHunSheng 于 2009-05-28, 10:15:22:
回答: 是用来干什么的？ 由 为何偏偏喜欢你 于 2009-05-28, 10:01:40:
There is a magnetic mat at start or finish (usually both
but at some race only at finish). When you cross the mat, your chip emit a uniue signal, which will be recorded
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