Computer fan

Okay kiddo, so you know how sometimes you feel hot and you try to cool down by waving your hand in front of your face or fanning yourself with a paper? Well, computers can get hot too when they're working really hard, and they need something to help cool them down. That's where the computer fan comes in.

A fan is a little machine that spins around really fast, like a toy top or a helicopter propeller. When the computer gets too hot, the fan starts spinning and blows cool air onto the parts that are heating up. This helps to cool them down and keeps the computer from overheating.

Now, you might be wondering where this cool air comes from. Well, there's a special part in the computer called a heat sink that helps remove heat away from the components. The fan blows air over the heat sink, which causes the heat to be transferred to the air, and then the hot air is blown out of the computer through vent holes on the case.

Sometimes when you're using your computer, you might notice that the fan gets really loud and starts spinning really fast. That's because the computer is working really hard and getting really hot, so the fan has to work extra hard to keep it cool. You don't have to worry though, because the fan is doing its job and making sure your computer stays safe and healthy.

So there you have it, that's what a computer fan does. Just like you need a fan to cool down when you're hot, computers need them too!