ELI5: Explain Like I'm 5

semi conductor

A semiconductor is a special kind of material that can be used to make different kinds of gadgets, like computers and phones. It's made from different kinds of materials such as silicon, germanium, and gallium arsenide. When electricity is applied to a semiconductor, it can either let the electricity pass through or block it. That makes them great for controlling and regulating electricity and creating different kinds of technology.