Re: Comparison Failure for And or Or gates

Posted by Idrisadeniyi on Jan 30, 2021; 1:32pm
URL: http://nand2tetris-questions-and-answers-forum.52.s1.nabble.com/Comparison-Failure-for-And-or-Or-gates-tp4035543p4035568.html

Alright Thanks a lot.

But could you please shed more light to this And gate issue. I have tried all my possible best and then realized that Nand gate can't be used in the implementation of the And chip as shown above.

As a matter of fact, Not is the only chip I have been able to successfully implement so far. After your explanation, I re-dissect the combination of Not and Nand gates to produce And therefrom; but i realized that it is somewhat impossible.

Normally, The two Nots implementation I have in the parts are given me the expected result for the first three rows of the And gate. Since Nand is the opposite of And, I am not getting the correct value in the last row of the And gate. Having been able to implement only Not Chip, there is no any other gate I could use for this implementation and I have been stuck on this for days now.