Robert E. Kahn
Born	December 23, 1938 (1938-12-23) (age 69)
Nationality	USA
Fields	Computer Science
Institutions	DARPA Corporation for National Research Initiatives
Known for	TCP/IP

Robert Elliot Kahn, (born December 23, 1938) invented the TCP protocol, and along with Vinton G. Cerf created the IP protocol, the technologies used to transmit information on the Internet. Events 962 - Byzantine-Arab Wars: Under the future Emperor Nicephorus Phocas, Byzantine troops stormed the city Year 1938 ( MCMXXXVIII) was a Common year starting on Saturday (link will display the full calendar of the Gregorian calendar. Computer science (or computing science) is the study and the Science of the theoretical foundations of Information and Computation and their The Defense Advanced Research Projects Agency (DARPA is an agency of the United States Department of Defense responsible for the development of new Technology The Corporation for National Research Initiatives (abbreviated CNRI) based in Reston Virginia, is a Non-profit organization founded in 1986 The Internet Protocol Suite (commonly TCP/IP) is the set of Communications protocols used for the Internet and other similar networks Events 962 - Byzantine-Arab Wars: Under the future Emperor Nicephorus Phocas, Byzantine troops stormed the city Year 1938 ( MCMXXXVIII) was a Common year starting on Saturday (link will display the full calendar of the Gregorian calendar. The Transmission Control Protocol (TCP is one of the core protocols of the Internet Protocol Suite. Vinton Gray "Vint" Cerf His contributions have been recognized repeatedly with honorary degrees and awards that include the National Medal of Technology, and The Internet Protocol ( IP) is a protocol used for communicating data across a Packet-switched Internetwork using the Internet Protocol The Internet is a global system of interconnected Computer networks

After receiving a B. E. E. from the City College of New York in 1960, Dr. The City College of The City University of New York (known more commonly as the City College of New York or simply City College, CCNY, or colloquially as Kahn earned M. A. and Ph. D. degrees from Princeton University in 1962 and 1964 respectively. Princeton University is a private Coeducational research university located in Princeton, New Jersey.

In 1972 he moved to ARPA (now known as DARPA), and in October of that year, he demonstrated the ARPANET by connecting 40 different computers at the International Computer Communication Conference, publicizing the network to the general public for the first time. The Defense Advanced Research Projects Agency (DARPA is an agency of the United States Department of Defense responsible for the development of new Technology The ARPANET ( Advanced Research Projects Agency Network) developed by ARPA of the United States Department of Defense, was the world's first operational After he became Director of DARPA's Information Processing Techniques Office (IPTO), he started the United States government's billion dollar Strategic Computing Program, the largest computer research and development program ever undertaken by the U. S. federal government.

The Internet

While working on a satellite packet network project, he came up with the initial ideas for what later became the Transmission Control Protocol (TCP), which was intended as a replacement for an earlier network protocol, NCP, used in the ARPANET. In Information technology, a packet is a formatted unit of Data carried by a Packet mode Computer network. The Transmission Control Protocol (TCP is one of the core protocols of the Internet Protocol Suite. The ARPANET Network Control Program (NCP provided the middle layers of the Protocol stack running on an ARPANET host computer While working on this, he played a major role in forming the basis of open-architecture networking, which would allow computers and networks all over the world to communicate with each other, regardless of what hardware or software the computers on each network used. To reach this goal, TCP was designed to have the following features:

• Small sub-sections of the whole network would be able to talk to each other through a specialized computer that only forwarded packets (first called a gateway, and now called a router). A router ('rautər in the USA 'rutər in the UK and Ireland, or either pronunciation in Australia and Canada is a Computer whose software and hardware are usually
• No portion of the network would be the single point of failure, or would be able to control the whole network.
• Each piece of information sent through the network would be given a sequence number, to ensure that they were dealt with in the right order at the destination computer, and to detect the loss of any of them. The Transmission Control Protocol (TCP is one of the core protocols of the Internet Protocol Suite.
• A computer which sent information to another computer would know that it was successfully received when the destination computer sent back a special packet, called an acknowledgement (ACK), for that particular piece of information. In Information technology, a packet is a formatted unit of Data carried by a Packet mode Computer network.
• If information sent from one computer to another was lost, the information would be retransmitted, after the loss was detected by a timeout, which would recognize that the expected acknowledgement had not been received.
• Each piece of information sent through the network would be accompanied by a checksum, calculated by the original sender, and checked by the ultimate receiver, to ensure that it was not damaged in any way en route. A checksum is a form of Redundancy check, a simple way to protect the integrity of data by detecting errors in data that are sent through space ( Telecommunications

Vint Cerf joined him on the project in the spring of 1973, and together they completed an early version of TCP. Vinton Gray "Vint" Cerf His contributions have been recognized repeatedly with honorary degrees and awards that include the National Medal of Technology, and Later, it was separated into two separate layers, with the more basic functions being moved to the Internet Protocol (IP). The Internet Protocol ( IP) is a protocol used for communicating data across a Packet-switched Internetwork using the Internet Protocol The two together are usually referred together as TCP/IP, and are the basis for the modern Internet.

Recent career

After thirteen years with DARPA, he left to found the Corporation for National Research Initiatives (CNRI) in 1986, and as of 2006 is the Chairman, CEO and President. The Corporation for National Research Initiatives (abbreviated CNRI) based in Reston Virginia, is a Non-profit organization founded in 1986 CNRI is a nonprofit organization which is intended to provide leadership and funding for research and development of the National Information Infrastructure.

Recognition

He was awarded the SIGCOMM Award in 1993 for "for visionary technical contributions and leadership in the development of information systems technology", and shared the 2004 Turing Award with Vint Cerf, for "pioneering work on internetworking, including . The SIGCOMM Award recognizes lifetime contribution to the field of Communication networks The award is presented in the annual SIGCOMM Technical Conference The term information system (IS sometimes refers to a System of persons Data records and activities that process the data and Information in an organization The A M Turing Award is given annually by the Association for Computing Machinery to "an individual selected for contributions of a technical nature made to the computing Internetworking involves connecting two or more distinct Computer networks or network segments via a common routing technology . the Internet's basic communications protocols . In the field of Telecommunications, a communications protocol is the set of standard rules for data representation signaling authentication and error detection required to . and for inspired leadership in networking. "

Vint Cerf and Kahn being awarded the Presidential Medal Of Freedom by President Bush

He is a recipient of the AFIPS Harry Goode Memorial Award, the Marconi Award, the ACM SIGCOMM Award, the President's Award from ACM, the IEEE Koji Kobayashi Computer and Communications Award, the IEEE Alexander Graham Bell Medal, the IEEE Third Millennium Medal, the ACM Software Systems Award, the Computerworld/Smithsonian Award, the ASIS Special Award and the Public Service Award from the Computing Research Board. The IEEE Alexander Graham Bell Medal was instituted by the IEEE Board of Directors in 1976 commemorating the Centennial of the invention of the Telephone He has twice received the Secretary of Defense Civilian Service Award. He is a recipient of the 1997 National Medal of Technology, the 2001 Charles Stark Draper Prize from the National Academy of Engineering, the 2002 Prince of Asturias Award, and the 2004 A. M. Turing Award from the Association for Computing Machinery. The National Medal of Technology and Innovation (formerly known as the National Medal of Technology) is an honor granted by the President of the United States to American The National Academy of Engineering awards annually the Charles Stark Draper Prize, which is given for the advancement of engineering and the education of the public about The A M Turing Award is given annually by the Association for Computing Machinery to "an individual selected for contributions of a technical nature made to the computing Dr. Kahn received the 2003 Digital ID World award for the Digital Object Architecture as a significant contribution (technology, policy or social) to the digital identity industry. In 2005 he was awarded the Townsend Harris Medal from the Alumni Association of the City College of New York, the Presidential Medal of Freedom, and the C & C Prize in Tokyo, Japan. The Presidential Medal of Freedom is a decoration bestowed by the President of the United States and is along with the equivalent Congressional Gold Medal bestowed He was inducted into the National Inventors Hall of Fame in May 2006. The National Inventors Hall of Fame is an organization that recognizes Inventors and invention everywhere promotes creativity and advances the spirit of innovation and entrepreneurship He was awarded the 2008 Japan Prize for his work in "Information Communication Theory and Technology" (together with Vinton Cerf). The Japan Prize (日本国際賞 is awarded to people from all parts of the world whose "original and outstanding achievements in science and technology are recognized as having advanced

In 2001 he was inducted as a Fellow of the Association for Computing Machinery. A fellow in the broadest sense is someone who is an equal or a comrade The Association for Computing Machinery, or ACM, was founded in 1947 as the world's first scientific and educational Computing society

Dr. Kahn has received honorary degrees from Princeton University, University of Pavia, ETH Zurich, University of Maryland, George Mason University, the University of Central Florida and the University of Pisa, and an honorary fellowship from University College, London.

Articles

• Vinton Cerf & Bob Kahn, Al Gore and the Internet, 2000-09-28 [1]

See also

• Paul Baran co-inventor of packet-switched networks with Donald Davies

Notes

DBLP Listing

External links

• Biography of Robert E. Kahn on the Corporation for National Research Initiatives' website. Vinton Gray "Vint" Cerf His contributions have been recognized repeatedly with honorary degrees and awards that include the National Medal of Technology, and Albert Arnold Gore Jr (born March 31 1948 is an American environmental Activist, author Businessperson, former Politician, and former The Internet is a global system of interconnected Computer networks 2000 ( MM) was a Leap year that started on Saturday of the Common Era, in accordance with the Gregorian calendar. Events 48 BC - Pompey the Great is assassinated on orders of King Ptolemy of Egypt after landing in Egypt. Paul Baran (born April 29, 1926) was one of the three inventors of Packet-switched networks along with Donald Davies and Leonard Kleinrock Donald Watts Davies, CBE FRS ( June 7, 1924 &ndash May 28, 2000) was a Welsh Computer scientist
• Oral history interview with Robert E. Kahn Oral history interview by William Aspray, 22 March 1989, Reston, Virginia Charles Babbage Institute, University of Minnesota, Minneapolis
• Bio of Robert E. Kahn from the Living Internet. The Charles Babbage Institute (also titled the Center for the History of Information Technology) is a research center at the University of Minnesota specializing
• "Morning Edition" interview (NPR)
• "Nerd TV" interview (with Robert X. Cringley) - Requires QuickTime (transcript)
• Computer Networks: The Heralds of Resource Sharing, documentary ca. QuickTime is a Multimedia framework developed by Apple Inc, capable of handling various formats of Digital video, Media clips sound text 1972 about the ARPANET. The ARPANET ( Advanced Research Projects Agency Network) developed by ARPA of the United States Department of Defense, was the world's first operational Includes footage of Robert E. Kahn.
• A short history of Bobs (story/slideshow) in computing, from Bob Kahn to Bob Metcalfe to Microsoft Bob and Alice & Bob
• "An Evening with Robert Kahn in conversation with Ed Feigenbaum" - Requires WMV player
• "Managing Digital Objects on the Web - Dec. 11, 2007" - The talk is available in Flash, Mpeg-4, Real Media and Windows Media formats