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WiFi is a technology for wireless local area networking with devices based on the IEEE 802.11 standards. Wi-Fi is a trademark of the Wi-Fi Alliance, which restricts the use of the term Wi-Fi Certified to products that successfully complete interoperability certification testing.
In 1971, ALOHAnet connected the Hawaiian Islands with a UHF wireless packet network. ALOHAnet and the ALOHA protocol were early forerunners to Ethernet, and later the IEEE 802.11 protocols.A 1985 ruling by the U.S. Federal Communications Commission released the ISM band for unlicensed use.These frequency bands are the same ones used by equipment such as microwave ovens and are subject to interference.
In 1991, NCR Corporation with AT&T Corporation invented the precursor to 802.11, intended for use in cashier systems. The first wireless products were under the name WaveLAN. They are the ones credited with inventing Wi-Fi.The Australian radio-astronomer John O'Sullivan with his colleagues Terence Percival, Graham Daniels, Diet Ostry, John Deane.
Founded : 1971
History OF : WIFI
Introduction : Wi-Fi is synonymous with an internet connection, however this is far from the truth. Wi-Fi is actually a wireless standard for connecting to a router from your device.
A router is a device that creates an internal home or office wireless network, and acts as the hub of this network. When you type in a website address from your phone or computer, it sends the address to the router. The router requests this page from the modem. The modem then connects to your ISP and sends the address to a DNS server. A DNS (Domain Name System) server acts as a phone book, getting the numerical IP (Internet Protocol) address for the website address you typed. It then sends the IP to your computer, which saves it for later use and then requests the page from the ISP using the new address. When the ISP (Internet Service Provider) delivers the page, the modem sends it to the router. The router then sends it to your device. Wi-Fi was born in 1985 after the United States FCC opened up the wireless frequencies 900Mhz, 2.4Ghz, and 5.8Ghz to be used without a license. These radio bands were used by household appliances such as microwaves, and were assumed to have no practical application in communications due to interference from the aforementioned appliances. To make these frequencies useable for communication, the FCC mandated usage of spread spectrum technology over these bands.