As most of you probably know, electronic devices are usually made with chips and not individual AND gates.
I had a go at making a basic PLA chip with redstone (not actually sure if you can still buy these). Hopefully later on I can make some more useful chips which can be programmed for use in more advanced electronics.
They work using an array of AND and OR gates with a fuse on each intersection, once the fuse is blown it will block the signal down that specific line. I didn't get around to wiring up the fuses so there are like 50+ inputs xD