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求救,关于射频卡读写问题
2007-12-28 00:09
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- 2
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谁有SM或AT89C52的中文资料
2007-12-12 11:50
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- 12
- 1550
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有3V工作的RC500兼容芯片吗?兼容芯片的读卡距离怎么样?
2007-12-30 21:36
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- 9
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找8元的32K flash 1K ram 的51单片机
2008-1-17 14:36
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- 7
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