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An Internet Overview Cyberspace Explorations Class BOLLI - Fall 2005.

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Presentation on theme: "An Internet Overview Cyberspace Explorations Class BOLLI - Fall 2005."— Presentation transcript:

1 An Internet Overview Cyberspace Explorations Class BOLLI - Fall 2005

2 A Little “Pre-History” Before the advent of the modern Internet, a communications revolution dramatically changed how countries, companies, and people interacted. It has come to be called the “Victorian Internet”. What was it?

3 “Victorian Internet”? The Telegraph – Invented in the 1840’s Heretofore, information could move only as fast as a horse could run Now, messages could be sent instantaneously by wires established over vast distances Used extensively by the U.S. Government during the American Civil War

4 Origins of the Modern Internet Arpanet/Darpanet (~ 1969) – US Government Sponsored Project. Developed to permit sending one-to-one electronic messages (Email) between researchers at physically separated laboratories. Also, developed to electronically transfer files from one researcher to another.

5 Principal Design Goal: establish “fail-safe” communications by creating alternate routes between computers. Old Way New Way Origins of the Internet (cont’d)

6 A special “protocol” (i.e., language) was developed known as TCP/IP to facilitate communications from “sender” to “receiver” Each message is broken into small “packets” each sent individually, then reassembled into original message by the recipient. Origins of the Internet (cont’d)

7 1980  1990 – Email services are gradually extended to businesses and homes. World Wide Web (WWW) introduced in 1991 by Tim Berners-Lee (recently knighted by the Queen of England and now associated with MIT). knighted Berners-Lee’s work (at CERN research center in Geneva, Switzerland) developed software to allow electronic documents (i.e., Web pages) to link to one another.

8 Origins of the Internet (cont’d) 1993 – World Wide Web commercialized by release of first Netscape Web browser. Today – Dozens of browser programs exist, the most popular being: Microsoft Internet Explorer Mozilla Firefox Netscape Navigator Opera Browser AOL Browser

9 The Internet E-Mail World Wide Web Instant Messaging (I/M) What is the Internet? VOIP (Voice Over Internet Protocol)

10 How Does the Internet Work? – Yesterday

11 How Does the Internet Work? –Tomorrow MY TELEPHONE

12 Evolution of the Modern PC 1975 – Bill Gates develops BASIC for first Altair Computer 1977 – First consumer computers released: Apple I/II, Commodore PET, Radio Shack TRS80 1981 – First IBM PC sold for $3,500 1983 – First successful “portable” PC from Compaq 1984/5 – Apple introduced “graphical user interface” (GUI) with Lisa and then Macintosh 1986 – Microsoft Windows 1.0 introduced. 1991 – First “usable” release of Microsoft Windows (version 3.0) 1993  2003 – Seven subsequent versions of Windows released: 3.1, 95, 98 98SE, ME, 2000, XP

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14  Back


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