I have been watching Crash Course's series on building computers from logic gates, and I am currently on the 8-bit ripple carry adder. I'm building it in Minecraft in order to learn in a more hands-on way. However, when they jump to the ALU, I feel like they are not nearly as specific as to what goes into it, and I'd really appreciate it if someone could tell me how I'm supposed to build an ALU from here. #technology