semiconductor

A semiconductor is like a special material that is used in all kinds of electronics, like computers and phones. It's sort of like an electrical switch - it can turn electricity on and off when you want it to. It's made out of different kinds of elements like silicon, and when you put electricity on it, it can change what it looks like and how it behaves, and that's how it can control the flow of electricity. So it's like an important piece in all sorts of electronic devices, because it can be used to make things work the way they're supposed to.