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half subtraction by using TTL circuit

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tamtoma

New Member
plz help me,am design subtraction circuit in OrCAD software, to do it as hardware circuit..
when iam simulated it, if input was a=5,b=5 the output DIFF=5 and BORROW=5

plz help me soon to found the error ..

 

Bob Scott

New Member
Is not looking good. I see no inputs, no outputs, transistor bases biased with 10 ohm resistors, no voltage source voltage values.

You are making a joke, right?
 
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