Re: Full-Adder (3 Gates)

Posted by WBahn on May 20, 2019; 3:39pm
URL: http://nand2tetris-questions-and-answers-forum.52.s1.nabble.com/Full-Adder-3-Gates-tp4029696p4033179.html

A full adder can be implemented using three half adders.

Just track the math that you do by hand to add three one-bit numbers together under the constraint of only getting to add two one-bit numbers together at any one time. The logic design falls out immediately from those steps.