A router is a device that sends data between different computer networks, like your home Wi‑Fi and the internet. It decides where each piece of data should go so it reaches the right destination.
Formed from the word *route*, meaning 'path', plus the agent-ending *-er*, meaning 'thing that does'. It literally means 'thing that routes', or sends things along paths.
Your router is basically a tiny traffic controller for information, constantly shouting, 'You go left, you go right!' in microseconds. It never sees pictures or videos as you do—only numbered packets and addresses. To your router, your favorite movie is just a storm of labeled data fragments flying through invisible roads.
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