What are events and signals?

Events and signals are like messages that help things know when to do something.

Imagine you're playing with your favorite toy car. When you press a button on it, something happens, maybe the car zooms forward or lights up. That button press is like an event, and the car moving is the signal it sends.

Think of events as a shout from one part of a playground, and signals are how the other kids know to run, jump, or cheer. If your friend shouts, "It's my turn!" that's the event, then you all stop playing and wait for them to start their game. That’s the signal telling everyone what happens next.

Events and signals are everywhere. Your alarm clock has an event when it rings, and your signal is waking up. A doorbell makes an event, and the sound is its signal, letting you know someone is at the door.

So whether it’s a button press, a shout, or a ringing bell, events and signals help things talk to each other and know what to do next!