Wi-Fi

Wi-Fi :

Most people have lap-tops or tablet devices at home that access the internet without any wires, by using Wi-Fi.  But do you know what Wi-Fi is?

To connect to the internet, every home needs a router – this is a gadget that sends and receives information through a phone line or TV cable, connecting to several computers around the house or office at the same time.

Computers can be plugged into the router using a network cable, but Wi-Fi is more convenient as it uses radio signals. The wireless device in the computer and router work like two-way radios, sharing large amounts of information.  Whilst a router can use different radio channels,  the information carried is addressed to a specific machine. To ensure the communications stay safe, there are different ways to encrypt it, and that’s why you need to set up a password.