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led electronic clock production, the use of real-time clock chip DS1302+ AT89C2051 infrared remote control LED electronic clock
Packet : 13898400ds1302 at89c2051.rar filelist
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DS1302+AT89C2051的LED钟\采用AT89C2051的智能时钟.doc
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DS1302+AT89C2051的LED钟