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The Evolution of ARPANET

By Alexander T
  • Creation of ARPA

    Creation of ARPA

    ARPA (Advanced Research Projects Agency) was established by the U.S. Department of Defense in Response to the Soviet launch of Sputnik 1.
  • Speculation of a Worldwide Communication Network

    Speculation of a Worldwide Communication Network

    Licklider proposed a vision of a worldwide interconnected network. Computers connected to the network would be able to information in a way that had not been possible before.
  • Concept of the Wide Area Network

    Concept of the Wide Area Network

    Lawrence Roberts and Thomas Merrill perform the Wide Area Network experiment.

  • ARPANET Official Presentation

    The initial plan for ARPANET was presented at the 1967 ACM Symposium
  • BBN is Contracted to build ARPANET

    BBN is Contracted to build ARPANET

  • First Transmission

    The first message of "LOGIN" is sent across the network.
  • ARPANET access at UCLA

    ARPANET access at UCLA

    The first ARPANET node is installed at UCLA

  • Network Expansion

    Three mode access points were installed at Stanford, UC Santa Barbara, and University of Utah.
  • Introduction of Email

    Introduction of Email

    Ray Tomlinson introduces the idea of email on ARPANET.
  • TCP & IP Development

    TCP & IP Development

    Vinton Cerf and Robert Kahn begin development on the TCP and IP communication standards.

  • International Connections

    ARPANET access points were installed at University College London and NORSAR.

  • Operational Status Declaration

    ARPANET was declared fully operational by the Defense Communications Agency.

  • TCP & IP Standardization

    TCP IP becomes the official communication protocols for ARPANET.
  • Domain Name System Introduced

    Domain Name System Introduced

    DNS is introduced to ARPANET to simplify IP address retrieval.
  • ARPANET is Decommissioned

    ARPANET is Decommissioned