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abcde12345
abcde12345
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樓主  發(fā)表于: 2014-07-28 23:53


如圖所示我單擊R2 ，那么R0只響應一個(gè)掃描周期，那么R1怎么會(huì )得電的呢，突然想不明白，請各位大俠說(shuō)說(shuō)啊，書(shū)上也不是很詳細的，
jhbob
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1樓  發(fā)表于: 2014-07-29 07:57
DF 微分指令是指當前面的條件滿(mǎn)足時(shí)在一個(gè)掃描周期內有效

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