SYSIN

Sysin is like a game where you tell the computer what to do. But instead of saying it out loud or typing it into the computer, you write it down on a piece of paper. Then you give the paper to the computer and it does what you told it to do. It's a way to make the computer do things without having to sit there and type everything out yourself. It's like a secret code that the computer understands. So when you write something like "print hello world" on the paper, the computer knows what that means and will show you the words "hello world" on the screen. It's pretty cool!