Homemade LED electronic bell in many electronic newspapers and magazines can be seen, but most of the power outages after the re setup time and other parameters to use to bring a lot of inconvenience. Also useful backup battery as a backup power, but often larger. This paper introduces the LED electronic clock to overcome the shortcomings of the past, and the use of common household appliances infrared remote control, easy to use. There is a road, alarm output, the remote control can set the alarm time and allow it or not.

采用实时时钟芯片DS1302+AT89C2051的红外遥控LED电子钟.doc

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