In 1969, ARPANET, an experimental 4-computer network was established by the Advanced Research Projects Agency (ARPA) of the U.S. Defense Department so that research scientists could communicate. By 1971, ARPANET linked 2 dozen computers at 15 separate sites, including the Massachusetts Institute of Technology (MIT) and Harvard. By 1981, there were over 200 hosts and throughout the 1980s more and more computers, using different operating systems, were connected. In 1983, the military portion of ARPANET was relocated onto the MILNET (military network) and ARPANET was disbanded.
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Citation: Richert, Lucas Paul. "Arpanet computer network launched". The Literary Encyclopedia. First published 01 October 2008 [https://staging.litencyc.com/php/stopics.php?rec=true&UID=3606, accessed 26 November 2024.]