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Robert "Bob" Melancton Metcalfe (born April 7, 1946) [2] [3] is an American engineer and entrepreneur who contributed to the development of the internet in the 1970s. He co-invented Ethernet, co-founded 3Com, and formulated Metcalfe's law, which describes the effect of a telecommunications network.
David Reeves Boggs (June 17, 1950 – February 19, 2022) was an American electrical and radio engineer who developed early prototypes of Internet protocols, file servers, gateways, network interface cards [1] and, along with Robert Metcalfe and others, co-invented Ethernet, the most popular family of technologies for local area computer networks.
Power is drawn from a PS/2 port passthrough cable. Ethernet was developed at Xerox PARC between 1973 and 1974 [4] [5] as a means to allow Alto computers to communicate with each other. [6] It was inspired by ALOHAnet, which Robert Metcalfe had studied as part of his PhD dissertation [7] [8] and was originally called the Alto Aloha Network. [6]
A cable for Ethernet may be wired to either the T568A or T568B termination standard at both ends of the cable. Since these standards differ only in that they swap the positions of pairs 2 and 3 – the only pairs used by the formerly common 10BASE-T and 100BASE-TX – a cable with T568A wiring at one end and T568B at the other functions as a ...
50 Ω coaxial cable connects machines together, each machine using a T-connector to connect to its NIC. Requires terminators at each end. For many years during the mid to late 1980, this was the dominant Ethernet standard. Also called Thin Ethernet, Thinnet or Cheapernet. 10 Mbit/s over RG-58 coaxial cabling, bus topology with collision ...
Some ARCNET twisted-pair products supported cable runs over 2,000 ft (610 m) on standard Cat-3 cable, far beyond anything Ethernet could do on any kind of copper cable. In the early 1990s, Thomas-Conrad Corporation developed a 100 Mbit/s topology called TCNS based on the ARCNET protocol, which also supported RG-62, twisted-pair, and fiber optic ...
1995: Company reaches one million users. 1996: America Online ditches its original pay-per-hour pay system in favor of a flat, $19.95 monthly fee, effectively beginning the modern internet era.
Also shown in this example (shaded in yellow) is the network's connection to the Internet via fixed-line means. A local area network (LAN) is a computer network that interconnects computers within a limited area such as a residence, campus, or building, [1] [2] [3] and has its network equipment and interconnects locally managed. LANs facilitate ...