A 7447 chip in digiworks.

Theslowone

Golden Member
Jul 30, 2000
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How can I get a 7447 chip in digiworks to do a 2's compelment?
I have a circuit that adds/subtracts 2 four bit numbers, with a switch that switches between adder and subtractor, the circuit works but how can i get the 7447 to do a 2's complement. Thanks for any help on this, it has been driving me nuts.