As the number of portable computing and communication devices grew, so does the demand to connect them to outside world. To go on line the computers had to be plugged into a telephone wall socket. Requiring a wired connection to fixed network meant that computers were portable, but not mobile.
To achieve true mobility the computers need to use radio(or wireless in that case) signals for communication. . In this manner, dedicated users would be able to read and send email while driving or moving to other rooms etc. A system of portable computers that communicate by radio are known as wireless LAN. Therefore to provide mobility to the systems, wireless local area networks were developed and now a new technology Wi-Fi or 802.11x(IEEE standard for wireless LAN setup), has become the most popular worldwide standard for the wireless communication in LAN..
Nowadays all major Laptop manufacturers provide an in built wi-fi system. Work is being done to make various devices like mobile phones, mp3 players etc to be wi-fi enabled.
In order to meet the growing demand for wi fi networks, various public places are provided with them.
In order to enhance the...
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