Re: Comparison Failure for And or Or gates

Posted by WBahn on Jan 31, 2021; 8:56am
URL: http://nand2tetris-questions-and-answers-forum.52.s1.nabble.com/Comparison-Failure-for-And-or-Or-gates-tp4035543p4035583.html

Idrisadeniyi wrote

That's exactly what I was trying to say. Based on this experience, it's clear that the combination of a Not and Nand gates cannot be used to implement an And gate. This is no longer a confusion for me as I have understood this point very clearly.

No, you haven't understood the point because your understanding is currently the very opposite of the point I was trying to make. An And gate very much CAN be made using nothing but Nand and Not gates.

Let's say that I have a logic function called Fred and I want to implement a new part that always outputs the opposite of whatever Fred would have output. What happens if I construct that new part by first using a Fred gate and then sending the output of that into a Not gate and using the output of the Not gate as the output of my new part?