What year was the Internet first used and by who?

Answer 1

No one person invented the Internet as we know it today. However, certain major figures contributed major breakthroughs:
Leonard Kleinrock was the first to publish a paper about the idea of packet switching, which is essential to the Internet. He did so in 1961. Packet switching is the idea that packets of data can be "routed" from one place to another based on address information carried in the data, much like the address on a letter. Packet switching replaces the older concept of "circuit switching," in which an actual electrical circuit is established all the way from the source to the destination. Circuit switching was the idea behind traditional telephone exchanges.

Why Packet Switching Matters
The big advantage of packet switching: a physical connection can carry packets for many different purposes at the same time, depending on how heavy the traffic is. This is much more efficient than tying up a physical connection for the entire duration of a phone call. And for services like the World Wide Web, where traffic comes in bursts, it's essential.

What if Google needed a separate modem and phone line to talk to every user, like an old-fashioned BBS (Bulletin Board System)? Handling millions of users would be prohibitively expensive.

With packet switching, packets destined for thousands or millions of users can share a single physical connection to the Internet.

J.C.R. Licklider was the first to describe an Internet-like worldwide network of computers, in 1962. He called it the "Galactic Network."
Larry G. Roberts created the first functioning long-distance computer networks in 1965 and designed the Advanced Research Projects Agency Network (ARPANET), the seed from which the modern Internet grew, in 1966.

Bob Kahn and Vint Cerf invented the Transmission Control Protocol (TCP) which moves data on the modern Internet, in 1972 and 1973.

Radia Perlman invented the spanning tree algorithm in the 1980s. Her spanning tree algorithm allows efficient bridging between separate networks. Without a good bridging solution, large-scale networks like the Internet would be impractical.

By 1983, TCP was the standard and ARPANET began to resemble the modern Internet in many respects. The ARPANET itself was taken out of commission in 1990. Most restrictions on commercial Internet traffic ended in 1991, with the last limitations removed in 1995.

Note that the Internet and the World Wide Web are not the same thing. See also: who invented the World Wide Web?, What is the difference between the World Wide Web and the Internet? and See also Hobbes' Internet Timeline for another excellent history of the Internet which includes later important events.

And don't forget, the Internet and the World Wide Web are NOT the same thing. The Internet is the actual network. The World Wide Web is something you can do with it. You can do other things with it, too. Playing Quake or sending email both use the Internet but are not the World Wide Web.

Answer 2

the Internet was created in the 1960's for the government and Private universities to share research and seek information

Answer 3

The military used it first. To communicate, but back then it was only text, it has come along way.

Answer 4

u'll get the full details here
http://www.internetvalley.com/archives/mirrors/cerf-how-inet.txt

Answer 5

try factmonster.com your answer is there and many more