How Does The ARPANET | the first internet Work?

ARPANET was like a group of friends who all had secret ways to talk to each other across town, even when they couldn’t see each other.

Imagine you and your best friend live on opposite ends of the city, but you both have walkie-talkies. You can send messages back and forth without needing to be in the same room. That’s kind of what ARPANET did, but with computers instead of people, and messages instead of voice.

ARPANET used special computers called routers, which were like friendly helpers who knew how to pass notes between different groups of friends. If one friend wanted to send a message to someone on the other side of town, the router would figure out the best path for that note to travel.

Each computer had a special name, kind of like your nickname at school. When you sent a message, the router checked its list of names and addresses, just like how your teacher knows which kid sits in which seat. That helped it know exactly where to send the note next!

So ARPANET was like having walkie-talkies for computers, letting them talk across town, and even all around the country!