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ydp
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樓主  發(fā)表于: 2010-05-22 22:15
我正開(kāi)發(fā)一種毒刺猬單片電路，有人對PLC解密時(shí)就向電腦側供24伏或更高的高頻電壓，但不傷PLC。我把這毒刺猬單片電路內置在PLC里面。
plc
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1樓  發(fā)表于: 2010-05-23 13:41
保密保到能有防御反擊破壞的水平，小弟佩服。
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