Tuesday, 17 May 2011

what is wireless?

                        Wireless operations permits services, such as long range communications, that are impossible or impractical to implement with the use of wires. The term is commonly used in the telecommunications industry to refer to telecommunications systems (e.g. radio transmitters and receivers, remote controls, computer networks, network terminals, etc.) which use some form of energy (e.g. radio frequency (RF), infrared light, laser light, visible light, acoustic energy, etc.) to transfer information without the use of wires. Information is transferred in this manner over both short and long distances.


                                        In telecommunicationswireless communication may be used to transfer information over short distances (a few meters as in television remote control) or long distances (thousands or millions of kilometers for radio communications). The term is often shortened to "wireless". It encompasses various types of fixed, mobile, and portable two-way radioscellular telephonespersonal digital assistants (PDAs), andwireless networking. Other examples of wireless technology include GPS units, garage door openers and or garage doors, wireless computer micekeyboards and headsetssatellite television and cordless telephones.

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