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Wi-Fi is short for Wireless Fidelity, which has the sense of a set of standards used for Wireless Local Networks (Wireless Local Area Networks - WLAN) based on IEEE 802.11 specification. The latest standards of specification 802.11a or b, such as 802.16 g, is currently in preparation, the latest specification offers many improvements ranging from broad coverage further until transfer speed.

Wi-Fi was originally intended for the use of wireless devices and Local Area Network (LAN), but now more widely used for accessing the internet. This allows anyone with a computer with a wireless card (wireless card) or personal digital assistant (PDA) to connect to the internet using access point (otherwise known as hotspots) nearby.

TYPES OF WI-FI
Wi-Fi is designed based on the IEEE 802.11 specification. Today there are four variations of the 802.11, namely:

* 802.11a
* 802.11b
* 802.11g
* 802.11n

B is the first product specification Wi-Fi. Variations of g and n is one product that has the most sales in 2005.
Specifications Wi-Fi