How Does Wi-Fi Work?

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Wi-fi, which is short for wireless fidelity, is a way of connecting to the Internet by using radio signals, as opposed to a cable. Find out why both ends of electronic devices need Wi-Fi connectivity to establish a wireless connection with help from a Web designer in this free video on computer and Internet tips.

Part of the Video Series: Internet & Computer Help
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Video Transcript

Hi, I'm Noah and today we're going to learn about how Wi-Fi works. Wi-fi, which is short for wireless fidelity is a way of connecting to the Internet by using radio signals instead of a cable. It's most common use is simply to use personal computers to connect to the Internet through a wireless router for example. Other uses include portable gaming devices like the PlayStation Portable, or Nintendo Dual Screen. And also, calling people from your personal computer through voice over IP. To have a Wi-Fi connection, both ends of the electronic devices which you are trying to connect to one another need to have some sort of Wi-Fi connectivity, meaning one you'll have for example, a wireless router attached to your cable or DSL modem, and on the other end, you're're computer for example, you'll need to have an integrated wireless adapter inside the laptop or personal computer, or you'll need a wireless USB adapter, like this one. The radio signals from the Wi-Fi devices usually have a limited range of about three hundred feet, so you'll have to have a pretty close distance. The thing to keep in mind is that the further apart in these three hundred feet you are, the slower the connection will be.


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