Wi-Fi, the abbreviation of wireless fidelity is a
wireless networking technology that is being used within a limited ranges
of area in the radio and electronic field all over the world. The
term Wi-Fi is derived from the term "Hi-Fi" means High
fidelity that was being used in electronic system for reproducing high-fidelity
sound from radio or recordings. The radio and electronic system that uses 802.11
standard are called Wi-Fi system. This networking system was developed by the Institute of Electrical and Electronics Engineers (IEEE) in 1997.
Wi-Fi is also spelled as WiFi, Wi-Fi, Wifi, or wifi. After invention of
this technology, it was launch in the market for commercialize purpose that
become very popular in the PDA, Laptop and other various accessories. Some
traders of Wi-Fi technology has been organized a group named Wi-Fi
Alliance for extracting and boosting it 's commercial profit.
In the Wi-Fi system computers are connected with wifi network card and this is further connected with wireless router. The router is connected to the modem through a cable or to a DSL modem. The another user who wants to access the internet through this network can connect to this network wirelessly within the range of 300 to 600 feet from the access point after getting a permission of the administrator .
Wifi networks are available in both forms open as well as closed. In "Open" system anyone can use it while in "Closed" system, a password is essential for using it. Radio also uses wifi technology of specific frequency of 2.4 GHz. Wifi technology will be very useful in computer technology as it enhance the chances of lightweight and mobile computer that consume low power. Nowadays most laptops are available in the market already equipped with internal wireless networking cards.
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