prepaid energy meter at89s52


Posted on Feb 7, 2014

Change the smart cards into manual push buttons to set the energy consumption so that the consumer will need not worry on where to buy smart cards. is this a possibility we also don`t have enough supply of smart cards here in out location. we are planning to change the smart cards into manual push buttons to set the energy consumption so that the


prepaid energy meter at89s52
Click here to download the full size of the above Circuit.

consumer will need not worry on where to buy smart cards. is this a possibility




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