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help!

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emz

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we have this project...we have to make a circuit with 3 input and the out put is through a 1 digit 7 segment common annnode. can some one give me a diagram?
 
did you google for 7447 or 74LS47?
 
and those 3 inputs do what?

at first glance I would say get 3 diodes and a resistor and make a diode AND or OR gate and maybe buffer it with either a BJT or if you want to get all IC a 74HC14 Schmitt inverter to clean it up as well
 
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