Culler's online system was chosen by ARPA to be one of the first four nodes on the original ARPANET in 1969, and with the University of California, Los Angeles (UCLA), participated in the first exchange of packets of data transmitted in the nascent Internet.

In this article, we'll learn about the equipment used in the original four-node ARPANET.

It connects computers, satellites, mobile devices and other gadgets together in a massive network millions of times more intricate than the original ARPANET.

These government networks are sometimes as old as the original ARPANET, and have simply not been incorporated into the Internet's evolving architecture.

Spawned from the original ARPANET, the modern Internet, World Wide Web and other services on it, such as virtual communities (bulletin boards, forums, and Massively multiplayer online games) have grown exponentially.

The IMP was developed at Bolt, Beranek and Newman (BBN) as part of their contract to build out the original ARPANET, and the first functional IMP was placed at UCLA on August 30, 1969.

The original ARPANET, one of the components which evolved eventually into the Internet, connected four Universities: University of California Los Angeles, University of California Santa Barbara, Stanford Research Institute and Utah University.

Originally, IP addressing was set up for three different classes of users: classes A, B, and C. Class A users, such as the original ARPANET, got an address block of 16777216 addresses so they could connect millions of systems to the Internet.

CSNET was the key transitional stepping stone from the original ARPANET to the NSFNET and then the Internet.