Visionary that developed the idea of a universal network of computers, evangelized his vision throughout the Information Processing Techniques Office (IPTO) - where he served as the first director - and inspired his successors to realize this dream through the creation of the ARPANET - which later became the Internet.

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Inventor of the Sketchpad, an early predecessor to the Graphical User Interface and former head of the Information Processing Technology Office (IPTO).

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Co-inventor of "packet switching" - a technology that splits communication data between computers into chunks sent separately so as to minimize the risk of network congestion.

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Co-inventor of packet-switching technology and several other inventions that were precursors to ATM, DSL and wireless mesh networking.

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Developed the mathematical theory of data networks and led the design, testing and implementation of the first wide-area-networking computer communication.

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As former director of ARPA, he facilitated and managed federal funding towards computer networking research at ARPA that led to the creation of ARPANET and thus the Internet. He also led research at XEROX PARC and DEC.

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Principal architect of ARPANET and former chief scientist of IPTO.

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Leonard Kleinrock's graduate student in 1969 that sent the first Internet computer-to-computer message from UCLA to SRI.

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Stanford researcher at SRI at the other end of the first Internet computer-to-computer message from UCLA to SRI

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Co-inventor of Transmission Control Protocol/Internet Protocol (TCP/IP).

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