One of the perks of being a logic-gate neophyte is that I get to ask the naïve questions. So, why is the textbook example of the half-subtractor (upper schematic) so easily surpassed by rerouting one of its outputs to express the other?
I noticed in the output table that the D column was a meager AND Y away from the B. How did the one with the third gate get the popular vote? Answer however you like, but remember that you're dealing with a mathematical purist who may just disagree with real-world behaviors.
I noticed in the output table that the D column was a meager AND Y away from the B. How did the one with the third gate get the popular vote? Answer however you like, but remember that you're dealing with a mathematical purist who may just disagree with real-world behaviors.