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What year did wi-fi come out?
AlohaNet, a predecessor to Ethernet and the family of 802.11 protocols, came out in 1971 but Wifi itself came out in 1997. The Wifi Alliance was formed two years later, in 1999, by 3Com, Aironet, Harris Semiconductor, Alcatel-Lucent, Nokia, and Symbol Technologies.
How was the first wifi router inventor?
In 1970 University of Hawaii, under the leadership of Norman Abramson, developed the world's first computer communication network using low-cost ham-like radios, named ALOHAnet. The bi-directional star topology of the system included seven computers deployed over four islands to communicate with the central computer on the Oahu Island without using phone lines Hopes this helps :)
Write about classical aloha?
TDMA comprises all mechanisms controlling medium access according to TDM. But what happens if TDM is applied without controlling access? This is exactly what the classical Aloha scheme does, a scheme which was invented at the University of Hawaii and was used in the ALOHANET for wireless connection of several stations. Aloha neither coordinates medium access nor does it resolve contention on the MAC layer. Instead, each station can access the medium at any time . This is a random access scheme, without a central arbiter controlling access and without coordination among the stations. If two or more stations access the medium at the same time, a collision occurs and the transmitted data is destroyed. Resolving this problem is left to higher layers (e.g., retransmission of data). The simple Aloha works fine for a light load and does not require any complicated access mechanisms. On the classical assumption1 that data packet arrival follows a Poisson distribution, maximum throughput is achieved for an 18 per cent load (Abramson, 1977), (Halsall, 1996).
Who had a tremendous impact on the history of computers?
I would say Robert Metcalfe the inventor of Ethernet. You know, the way you plug your computer into the Internet now a days. http://en.wikipedia.org/wiki/Robert_Metcalfe Metcalfe was working at Xerox PARC in 1973 when he co-invented Ethernet, a standard for connecting computers over short distances, with David Boggs. Metcalfe pegs the exact day Ethernet was born: May 22, 1973, the day he circulated a memo titled "Alto Ethernet" which contained a rough schematic of how Ethernet would work. "That is the first time Ethernet appears as a word, as does the idea of using coax as ether, where the participating stations, like in AlohaNet or Arpanet, would inject their packets of data, they'd travel around at megabits per second, there would be collisions, and retransmissions, and back-off," Metcalfe explains. David Boggs offers another date as the genesis of Ethernet: November 11, 1973, the first day the system actually functioned.[3] In 1979, Metcalfe departed PARC and founded 3Com, a manufacturer of computer networking equipment. In 1980 he received the Association for Computing Machinery Grace Murray Hopper Award for his contributions to the development of local networks, specifically Ethernet. In 1990 Metcalfe lost a boardroom skirmish at 3Com in the contest to succeed Bill Krause as CEO. The board of directors chose Eric Benhamou to run the networking company Metcalfe had founded in his Palo Alto apartment in 1979. Metcalfe left 3Com and began a 10 year stint as a publisher and pundit, writing an Internet column for InfoWorld. He became a venture capitalist in 2001 and is now a General Partner at Polaris Venture Partners. He is a director of Pop!Tech, an executive technology conference he cofounded in 1997. He has recently been working with Polaris-funded startup Ember to work on a new type of energy grid, Enernet.
Who formed the internet?
The Internet is a worldwide network of thousands of computers and computer networks. It is a public, voluntary, and cooperative effort between the connected institutions and is not owned or operated by any single organization. The Internet and Transmission Control Protocols were initially developed in 1973 by American computer scientist Vinton Cerf as part of a project sponsored by the United States Department of Defense Advanced Research Projects Agency (ARPA) and directed by American engineer Robert Kahn. The Internet began as a computer network of ARPA (ARPAnet) that linked computer networks at several universities and research laboratories in the United States. The World Wide Web was developed in 1989 by English computer scientist Timothy Berners-Lee for the European Organization for Nuclear Research (CERN). "The DESIGN of Internet was done in 1973 and published in 1974. There ensued about 10 years of hard work, resulting in the roll out of Internet in 1983. Prior to that, a number of demonstrations were made of the technology - such as the first three-network interconnection demonstrated in November 1977 linking SATNET, PRNET and ARPANET in a path leading from Menlo Park, CA to University College London and back to USC/ISI in Marina del Rey, CA."
