BARLEY

Background Description

In 1957, former Soviet Union launched the Sputnik (the first artificial Earth satellite), cause the American public fear of "technological backwardness" of February 1958, in order to appease people, funded by the US Congress to establish a special department "Advanced Research Projects Agency," US department of Defense at the Pentagon, referred to as "Apache" (ARPA).

Description

ARPA is the abbreviation of AdvancedResearchProjectsAgency, on behalf of the US Defense Advanced Research Projects Agency. US Department of Defense Advanced Research Projects Administration due to military purposes established at the beginning only four hosts are connected, this is only the father of four outlets of the networks

purpose

the department "based on current, future-oriented" as the core, dedicated to tackling those who only stay in the theory of high-tech, science and technology in order to ensure that the United States "always" leading the world for the mission.

create

ARPANET (Advanced Research Projects Agency -NET) created in 1969 by the Department of Defense, originally used to verify the different ways of networked computers. It is limited to military use.

important development

After early experiments, the shift to technology - packet switching technology.

As the RAND Corporation research, selection J.C.R.lickder as a project leader, ARPA began to raise funds to set up network drives. Change aspects of capital investment, investment began to shift from military investment by the Academic Computing Center.

1968 Nian, ARPA and BBN (Bolt, Beranek and Newman) signed an agreement. BBN responsible for research exchange network is designed in a Web analytics firm.

The actual network set up in 1969, it connects four nodes, the network transmission capacity was only 50Kbps, according to the standard, it is very low. But in any case, ARPANET became a reality. Internet first simple text-only system.

From the beginning in 1970, joined the ARPANET nodes continue to increase.

The first public exhibit of ARPA now the 1972 International Computer Communications Conference (ICCC) in. BBN write your first e-mail program, called ARPA scientists collaborate, soon apply to e-mail network.

ARPANET was using the NCP protocol that allows a computer to communicate with each other, but outside of the destination network and the computer can not assign addresses, thus limiting the opportunities for future growth. 1972 RobertKahn came to ARPA, and made open network framework, which appeared in TCP / IP (Transmission Control Protocol / Internet Protocol) well known.

1983 Nian 1 1st, all connected to the ARPANET hosts to achieve the transition from NCP to TCP / IP protocol. With a period of time, ARPANET carve become the ARPANET MILNET dedicated military and research purposes.