What is encoding?

Encoding is when we turn one kind of information into another so it can be used somewhere else.

Imagine you have a secret message written on a piece of paper, but your friend can’t read it unless they know the special way to change it back. That’s like encoding!

Let’s say you and your friend both use a codebook, a list that turns letters into numbers. You write “Hi” on the paper, and using your codebook, you turn H into 8 and I into 9. So your message becomes 8 9. Your friend gets it and uses their codebook to change it back to “Hi.” That’s encoding at work!

Or think of a photo on your phone, it's made up of tiny colored dots called pixels. When you send that picture to someone, your phone turns all those colors into numbers so the other phone can understand what to show. That’s also encoding!

So encoding is just like giving information a new language so it can travel from one place to another, or be read by someone who speaks that language!