請問有人可以幫忙回答這個問題嗎?它困擾了我20多年
Smart card - Wikipedia, the free encyclopedia 請神人解答!Contact smart cards have a contact area of approximately 1 square centimetre (0.16 sq in), comprising several gold-plated contact pads. These pads provide electrical connectivity when inserted into a reader which is used as a communications medium between...
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