Computer Parts

• The History and Evolution of the Internet

The Internet

• Partial map of the Internet based on the January 15, 2005 data. This graph represents less than 30% of the reachable internet.
• Colors:
• Dark blue: net, ca, us
• Green: com, org
• Red: mil, gov, edu
• Yellow: jp, cn, tw, au, de
• Magenta: uk, it, pl, fr
• Gold: br, kr, nl
• White: unknown

The Internet

• Another way to look at a map of the internet is look at the traffic to certain sites.
• http://internet-map.net
• The map of the Internet is a photo shot of the global network as of end of 2011. It encompasses over 350 thousand websites from 196 countries and all domain zones.
•  The red zone at the top corresponds to Russian segment of the net, the yellow one on the left stands for the Chinese segment, the purple one on the right is Japanese, the large light-blue central one is the American segment, etc.

A Brief History of the Internet

• The Internet began as ARPAnet, a U.S. Department of Defense project to create a nationwide computer network that would continue to function even if a large portion of it were destroyed in a nuclear war or natural disaster.
• 1957 - USSR launches Sputnik.
• 1958 - US forms the Advanced Research Projects Agency (ARPA to establish US lead in science and technology applicable to the military

A Brief History of the Internet

• 1962 –J.C.R. Licklider of MIT pictured a globally interconnected set of computers through which everyone could quickly access data and programs from any site. He called it the "Galactic Network" concept.
• 1965 - Thomas Merrill and Lawrence G. Roberts connected a computer in Massachusetts to one in California with a low speed dial-up telephone line creating the first wide-area computer network.
• 1969 - The physical network was constructed linking four nodes: University of California at Los Angeles, SRI (in Stanford), University of California at Santa Barbara, and University of Utah