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[SOLVED] Seven segment led display down counter

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reachrajesh

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Hai all i need a program for control 8051 to bcd 4511 to count down the timer for example port 1 has 8 pins if a select p2^7 means eight minutes want to decrement to zero include seconds to. I need to know how should i program for interface using single ic 4511 to access four segment led
 

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