The purpose of a system is what it does

A system is like a set of instructions or steps that tell you what to do. The purpose of a system is what it does, or what it is supposed to do. The purpose of a system could be to make some kind of food, like a cookie, or it could be used to play a game like soccer. Systems help us to do things quickly and easily. By following the instructions in the system we don't have to think about what the next step is.