Response: Gates (Not Bill)

It's good to refresh my mind from my computer science days. In theory, I used to understand how all of these electronics worked back in the day, but nowadays I see the same schematics, and I try to visualize how would I actually build these circuits on my breadboard, and I get confused. At one point the reading got a little bit tedious. I read the whole chapter, and I hope I didn't miss some important concept somewhere along the way. All I know is:

AND is always 0 unless both gates are 1
OR is always 1 unless both gates are 0
NAND is always 1 unless both gates are 1
NOR is always 0 unless both gates are 0