1. The problem statement, all variables and given/known data http://i.imgur.com/k8nq4HZ.jpg So I need to assign IC pin numbers to the input and output of the logic gates. 2. Relevant equations None 3. The attempt at a solution I only have limited knowledge on integrated circuits as a whole, so I'm pretty confused altogether. I know that I can hook up inputs and outputs onto my IC, and then produce a result, but how do I know which pin numbers to use? Edit: I learned a bit more about integrated circuits and logic gates over the internet, so I understand that each integrated circuit has a built in system of logic gates, and the pins represent either input, output, ground, or voltage source. However, I am still confused about what to do for this, I know that I'll probably be using multiple integrated circuits and using wires to replicate the situation in the picture, but I'm confused about a few things. On a breadboard, what exactly is A, B, Cin, S, and Cout? Also, is this assignment as simple as I think it is? Just wiring together integrated circuits according to the diagram?