iWoz: Computer Geek to Cult Icon by Steve Wozniak

Author:Steve Wozniak [Wozniak, Steve]
Language: eng
Format: epub
Tags: Biography & Autobiography, Business
ISBN: 9780393066869
Publisher: W. W. Norton & Company
Published: 2007-10-17T05:00:00+00:00

What Was the ARPANET?

Short for the Advanced Research Projects Agency Network, and developed by the U.S. Department of Defense, the ARPANET was the first operational packet-switching network that could link computers ail over the world. It later evolved into what everyone now knows as the global Internet. The ARPANET and the Internet are based on a type of data communication called "packet switching." A computer can break a piece of information down into packets, which can be sent over different wires independently and then reassembled at the other end. Previously, circuit switching was the dominant method—think of the old telephone systems of the early twentieth century. Every call was assigned a real circuit, and that same circuit was tied up during the length of the call.

The fact that the ARPANET used packet switching instead of circuit switching was a phenomenal advance that made the Internet possible.

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