ELI5: Explain Like I'm 5

Categorical abstract machine

Categorical abstract machine (CAM) is like a computer inside a computer. It is used to understand how computers work and how tasks can be done. It divides the way a computer works into different categories (or categories of instructions). Think of it like a bunch of different parts that work together to make a single machine. Each category is given a number, and the numbers tell the computer what to do.