The ALU
The ALU February 3, 2019 by thepigeonfighter The Arithmetic-Logic Unit All of mathematics solved with six bits. The ALU is the work-horse in the CPU. It is responsible for almost all computations. In previous posts I have described building various kinds of chips that have somewhat simple functionality. Each chip was required to have a specific behavior that can be repeated giving the same result every time. The last chip I described which was the Full-Adder was the first chip that had some immediate mathematical utility. Well this is the post where we bring everything together to create the most complicated chip we have made thus far, which will be able to do the following : ...