History of Computer Network

History of Computer Network

History of Computer Network
 
In the 1960's Computers from different manufactures were unable to communicate  with one another. The advanced Research Project Agency(ARPA) in the Department of Defense (DOD) has taken interest in connecting computers so that the computers can communicate with one another.
 
In 1967 ARPA came  up with its ideas for ARPANET a small network of connected computers. It suggest that each host computer(from any manufacturer)would be attached to a specialized computer called an Interface Message Processor(IMP).The IMP's inturn connected to other IMP's also.That is the IMP's can communicate with other IMP's as well  as with its own attached hosts.
 
In 1969 the ARPANET has become a reality. Software called Network Control protocol(NCP) provided communication between hosts using IMP's.
 
In 1972 two core members of the ARPANET group  collaborated on a project called Internetting project.And in 1973 they outlined the protocols for the end-to-end delivery of packets(Transmission control protocol :TCP).
 
Later the authorities decided to split TCP into two protocols:Tranmission control protocol(TCP) and Internet Protocol(IP).