Winners of Turing Award 2004

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Winners of Turing Award 2004
Presenter Yung-Hsing Peng Date 2005.05.06
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Introduction to Turing Award

• Considered the "Nobel Prize of Computing.
• Named for British mathematician Alan M. Turing.
• First awarded in 1966
• 100,000 prize

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Developer of TCP/IP
Vinton G. Cerf
Robert E. Kahn
They developed TCP/IP protocol from 1973 to 1978.
They won Turing Award because TCP/IP becomes a
must in network.
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In 1973

• Cerf joined Kahn in a project to link three
  independent networks into an integrated "network
  of networks.
• They realized that a "gateway" (now known as a
  router) was needed between each network to
  accommodate different interfaces and route
  packets of data.
• This meant designating host computers on a global
  Internet, for which they introduced the notion of
  an Internet Protocol (IP) address.

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In May 1974

• They published a paper describing a new method of
  communication called transmission-control
  protocol (TCP) to route messages or packets of
  data.
• Like an envelope containing a letter, TCP broke
  serial streams of information into pieces,
  enclosed these pieces in envelopes called
  "datagrams" marked with standardized "to and
  from" addresses, and passed them through the
  underlying network to deliver them to host
  computers. Only the host computers would "open"
  the envelope and read the contents.

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In 1978

• Cerf and several colleagues split the original
  protocol into two parts, with TCP ("letters")
  responsible for controlling and tracking the flow
  of data packets, and the Internet Protocol (IP,
  "envelopes") responsible for addressing and
  forwarding individual packets. The new protocol,
  TCP/IP, has since become the standard for all
  Internet communications.

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TCP/IP and Internet

• Cerf and Kahn developed TCP/IP, a format and
  procedure for transmitting data that enables
  computers in diverse environments to communicate
  with each other. This computer networking
  protocol, widely used in information technology
  for a variety of applications, allows networks to
  be joined into a network of networks now known as
  the Internet.