ARM9

An ARM9 is a teeny tiny computer inside of a bigger computer or machine that helps it work properly. Kind of like how our brains help us do things like move our arms or legs. It has its own special language it uses to give orders to different parts of the machine. Think of it like talking to your friends but instead of using words, it uses its own special language to tell the other parts of the machine what to do. It's a very important part of the machine as it helps make sure everything runs smoothly and properly.