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mm391
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If I was to make a modification to an 8 bit full adder to make it a an eight bit full subtractor would I put an inverter at the carry in input for the first full adder and then an inverter on one of each of the two inputs going into each adder. eg an inverter on A3, A2, A1, A0 and leave B3, B2, B1, B0 alone? (Where 0=add, 1=subtract).
Thanks for your help.
Matt
Thanks for your help.
Matt