What is the WWW? By J. Richard Stevens. Topics Brief history of the Internet and WWW Terminology Protocols and Addressing How publishing works Brief history.

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Presentation transcript:

What is the WWW? By J. Richard Stevens

Topics Brief history of the Internet and WWW Terminology Protocols and Addressing How publishing works Brief history of the Internet and WWW Terminology Protocols and Addressing How publishing works

History of the Internet/WWW Advanced Research Projects Agency established within the Department of Defense (Internet Pioneers) First node to node transmission from UCLA to Stanford - also first crash (IMP Photo) nodes on Internet Advanced Research Projects Agency established within the Department of Defense (Internet Pioneers) First node to node transmission from UCLA to Stanford - also first crash (IMP Photo) nodes on Internet

History of the Internet/WWW ARPA establishes the Transmission Control Protocol (TCP) and Internet Protocol (IP) Domain name system introduced, number of Internet hosts The WELL, first major online community was opened ARPA establishes the Transmission Control Protocol (TCP) and Internet Protocol (IP) Domain name system introduced, number of Internet hosts The WELL, first major online community was opened

History of the Internet/WWW number of hosts = 10, First commercial electronic mail through Internet (MCI and Compuserve) number of hosts = 100, World-Wide Web (WWW) released by CERN; Tim Berners-Lee number of hosts = 10, First commercial electronic mail through Internet (MCI and Compuserve) number of hosts = 100, World-Wide Web (WWW) released by CERN; Tim Berners-Lee

History of the Internet/WWW number of hosts exceeds 1,000, Mosaic browser is introduced, becomes Netscape in 1994, Bill Gates’ “prophetic wisdom” August Netscape IPO price $28, opening price $ number of hosts exceeds 1,000, Mosaic browser is introduced, becomes Netscape in 1994, Bill Gates’ “prophetic wisdom” August Netscape IPO price $28, opening price $71

History of the Internet/WWW Bill Gates famous "Internet Tidal Wave" speech DOJ files antitrust suit against Microsoft (U.S. vs. Microsoft) AOL purchases Netscape; AOL purchases Time Warner Bill Gates famous "Internet Tidal Wave" speech DOJ files antitrust suit against Microsoft (U.S. vs. Microsoft) AOL purchases Netscape; AOL purchases Time Warner

History of the Internet/WWW Today over 170 million American adults use the Internet, 74% of the adult population (75/73% gender gap); over 600 million worldwide; several hundred million Web sites. (Pew Internet and American Life Project)

What is the Internet/WWW? Internet - computers hosting the TCP/IP protocol World-Wide Web - A visual protocol combining hyperlinking with the TCP/IP protocol http HTML URL Internet - computers hosting the TCP/IP protocol World-Wide Web - A visual protocol combining hyperlinking with the TCP/IP protocol http HTML URL

Breaking Down URLs 1.Protocol http, ftp, telnet, news, mailto 2.Name or Address of server.com,.edu,.org,.gov,.mil,.biz,.tv IP addresses 3.File navigation 1.Protocol http, ftp, telnet, news, mailto 2.Name or Address of server.com,.edu,.org,.gov,.mil,.biz,.tv IP addresses 3.File navigation

WWW supported file types Hypertext Markup Language.html Joint Photographic Interchange Format.jpg Graphics Interchange Format.gif Portable Document Format.pdf Rich Text Format.rtf ASCII text.txt Real Audio files.ram,.rm Shockwave/Flash.swf,.flv Quicktime.mov Moving Pictures Experts Group.mpg,.mpeg,.mp3,.mp4 Hypertext Markup Language.html Joint Photographic Interchange Format.jpg Graphics Interchange Format.gif Portable Document Format.pdf Rich Text Format.rtf ASCII text.txt Real Audio files.ram,.rm Shockwave/Flash.swf,.flv Quicktime.mov Moving Pictures Experts Group.mpg,.mpeg,.mp3,.mp4

HTML Standards World Wide Web Consortium (W3C)—develops and maintains standards W3C adds, deletes or modifies HTML commands—called “tags” XHTML—the future of HTML World Wide Web Consortium (W3C)—develops and maintains standards W3C adds, deletes or modifies HTML commands—called “tags” XHTML—the future of HTML

How WWW publishing works