Systems
ARPANET
AR-puh-net
Also Known As Advanced Research Projects Agency Network
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ARPANET, the Advanced Research Projects Agency Network, was an experimental computer network funded by the US Department of Defense, whose first node went live at UCLA in 1969, connecting four university research sites by the end of that year. It was the first network to use packet switching, breaking messages into independently routed pieces, at wide scale, and the protocols and lessons learned running it directly shaped the design of the modern internet that eventually replaced it.
Facts
SignificanceThe first large scale packet switched network, and the direct ancestor of the modern internet. 1 Cross-Tradition Connections
Associated With
Davies's packet switching concepts and designs were incorporated into the ARPANET.
Robert Kahn, Pioneers Robert Kahn worked at Bolt Beranek and Newman on the Interface Message Processor subnetwork that connected ARPANET's early nodes, before his later work with Vint Cerf on TCP/IP.
TCP/IP, Systems The ARPANET migrated from NCP to TCP/IP, completed on the 1 January 1983 flag day.
In Field
Predecessor Of
Sources
1. Computer History Museum
Wikipedia: ARPANET
Wikimedia FoundationLead sectionQuote, Lead section
The Advanced Research Projects Agency Network (ARPANET) was the first wide-area packet-switched network with distributed control and one of the first computer networks to implement the TCP/IP protocol suite.
Wikipedia: Packet Switching
Wikimedia FoundationAssociated With: Packet Switching, History sectionQuote, Associated With: Packet Switching, History section
Immediately after SOSP, he [Roberts] incorporated Davies' concepts and designs for packet switching to enable the data communications on the network.
Wikipedia: Internet Protocol Suite
Wikimedia FoundationAssociated With: TCP/IP, Adoption sectionQuote, Associated With: TCP/IP, Adoption section
The migration of the ARPANET from NCP to TCP/IP was officially completed on flag day January 1, 1983, when the new protocols were permanently activated.
Wikipedia: Robert Kahn
Wikipedia: Client-server model
Wikimedia FoundationAssociated With: Client-Server Model, History sectionQuote, Associated With: Client-Server Model, History section
formulated during the 1960s and 1970s by computer scientists building ARPANET
Wikipedia: Distributed Computing
Wikimedia FoundationAssociated With: Distributed Computing, History sectionQuote, Associated With: Distributed Computing, History section
ARPANET, one of the predecessors of the Internet, was introduced in the late 1960s, and ARPANET e-mail was invented in the early 1970s.
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