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History of the Internet

1969A physical network known as Arpanet is commissioned by the Department of Defense for military research. It links nodes at three universities in California and one in Utah.
1972Ray Tomlinson of BBN Technologies creates the first network e-mail program and uses "@" in the address.
1976Robert M. Metcalfe develops Ethernet, which allows coaxial cable to move data very fast.
1983(Jan 1) Generally considered the birth date of the Internet. Every machine connected to Arpanet has to use a new protocol, TCP/IP, which allows computers from different networks to connect.
1984Number of computers connected to the Internet hits 1000.
1988The Morris Worm, the first Internet virus, is created by a Cornell University graduate student, causing much of the young network to crash.
1990The Arpanet officially becomes the Internet.
1992The World Wide Web and first Web browser, which makes it easy for users to call up Web pages, is created by Tim Berners-Lee at CERN in Switzerland. An early version of America Online is introduced.
1994The creation of Netscape brings browsing to the masses. Two attorneys send first spam e-mail, known as the Green Card Spam, to online newsgroups.
1998The e-commerce explosion begins when Amazon.com posts $1 billion in yearly sales. First use of high-speed digital subscriber line (DSL), in California.
2000Dot-com bubble goes bust, dragging down the stock market.
2003Sixty-three percent of all American adults and 75 percent of U.S. teens say they have used the Internet.

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