LectureCH10 - 10 The Internet Mass Communication Gets Personal The Development of the Internet • Internet —a diverse set of independent

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Unformatted text preview: 10 The Internet Mass Communication Gets Personal The Development of the Internet • Internet —a diverse set of independent networks, interlinked to provide its users with the appearance of a single, uniform network • Packet Switching: Letting Computers Talk to Each Other Paul Baran (1964): • designing a military communication network that could survive a nuclear strike • packet switching —cutting messages into little pieces and sending them on along the easiest route to their final destination message reassembled on the receiving computer Donald Davies (England): • coined the name packet switching ARPAnet • Advanced Research Projects Agency (ARPA) • headed by J.C.R. Licklider • universities supplied with large, expensive computers • in Fall 1969 ARPAnet connected four institutions o initial nodes were: • University of California-Los Angeles (UCLA) • Stanford Research Institute • University of California-Santa Barbara • University of Utah o first message from UCLA to Stanford o coincided with first moon landing, significance Connecting Incompatible Networks • creating the Internet’s protocols: • Bob Kahn and Vint Cerf • invented TCP/IP TCP stands for Transmission Control Protocol • allowed for conversion and transmission of messages across previously incompatible networks Commercial Networks Compuserve, Prodigy, and Quantum provided access for non-academics 1989—Quantum became America Online (AOL) • between 1993 and 1998, AOL subscribers grew from 200,000 to 8 million • faster, more efficient networks being built • Internet2 Consortium o as of 2007, participants include: • more than 200 U.S. universities • 70 corporations • 45 government agencies • 50 international organizations The Next-Generation Internet Computers as Communication Tools Interpersonal Communication: • E-mail and Instant Messaging electronic mail (e-mail) —a message sent from one computer user to another across a network initially limited to messages on a single computer Ray Tomlinson (1972): • developed a system to send messages across systems • created the addressing format • @ fit format, and was not already in use •...
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This note was uploaded on 06/13/2011 for the course JOUR 201 taught by Professor Roberts during the Fall '08 term at South Carolina.

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LectureCH10 - 10 The Internet Mass Communication Gets Personal The Development of the Internet • Internet —a diverse set of independent

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