A local area network, usually called a LAN, connects computers and devices within a small area like a home, school, or office building. Think of it as a private system that lets devices talk to each other and share resources without using the internet.

In your school, the LAN connects all the classroom computers to printers, servers, and each other. Students can save their work to shared folders, teachers can send assignments to every computer at once, and everyone can print to the same printers. At home, your family's LAN might connect laptops, tablets, gaming consoles, and phones through a router, letting you stream movies to your TV or play multiplayer games with your brother across the hall.

A LAN is local because it only covers a limited area, usually one building or a group of nearby buildings. It's a network because devices are connected together, able to communicate and share information. The connections might use cables (like Ethernet cords) or wireless signals (Wi-Fi), but either way, the devices form a private network under one person's or organization's control.

This differs from the internet, which is a massive wide area network connecting billions of devices worldwide. Your school's LAN connects to the internet, but the LAN itself is the smaller, private network inside the building.