Re: FullAdder imp.

Posted by notzy on May 14, 2021; 8:44pm
URL: http://nand2tetris-questions-and-answers-forum.52.s1.nabble.com/FullAdder-imp-tp4025675p4036005.html

Thanks for your fast reply. I have to admit that I don't fully understand your explanation, especially this sentence:

WBahn wrote

In no case what there a Carry from either of these operations but in which we wanted the Cout to be anything other than zero.

Can you reformulate that?

WBahn wrote

So the Cout bit is a 1 whenever there is a Carry from EITHER of the two half-add operations.

If this is the conclusion, shouldn't it be a Xor gate instead of Or?