Computers: Information Technology in Perspective By Long and Long Copyright 2002 Prentice Hall, Inc. Computers: Information Technology in Perspective Larry.

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Presentation transcript:

Computers: Information Technology in Perspective By Long and Long Copyright 2002 Prentice Hall, Inc. Computers: Information Technology in Perspective Larry Long & Nancy Long Copyright 2002 Prentice Hall, Inc.

Computers: Information Technology in Perspective By Long and Long Copyright 2002 Prentice Hall, Inc. Going Online Chapter 7

Quit 7.3 Let’s Go Surfing Monthly Technology Update

Quit 7.4 What Is the Internet? The Net is a worldwide collection of interconnected networks.

Quit 7.5 Internet History  ARPANET  Internet  InterNIC No person or organization governs the Internet! Internet

Quit 7.6 How do you get on?  Via dial-up connection to Information Service Gateway (ex: AOL) Information Service Gateway (ex: AOL) Internet Service Provider (ISP) Internet Service Provider (ISP)  Via direct network connection using a shared high-speed line on LAN

Quit 7.7 Connect via Information Service Gateway  Example: America Online  You have to have PC and modem PC and modem Monthly service charge Monthly service charge  You get User ID and password User ID and password Communications software Communications software User’s guide User’s guide

Quit 7.8 Connect via Internet Service Provider  ISP  Gives you direct access via a dialup connection  Do not offer extended information services, just a connection

Quit 7.9 Connect via Network Connection  Faster  Wired into Internet via LAN  Types of line connections: DSL line (9 M bps) DSL line (9 M bps) T-1 line (1.544 M bps) T-1 line (1.544 M bps) T-3 line ( M bps) T-3 line ( M bps)

Quit 7.10 Internet Terminology  Transmission Control Protocol/ Internet Protocol (TCP/IP)  Packets  Point of Presence (POP)  Point-to-Point Protocol (PPP)  Transmission Control Protocol/ Internet Protocol (TCP/IP)  Packets  Point of Presence (POP)  Point-to-Point Protocol (PPP)

Quit 7.11 Going Online Without a PC  Televisions  Set-top box linked to existing TV  Internet appliance Telephone Telephone Cellular phone Cellular phone ISPs offerings ISPs offerings

Quit 7.12 Retrieve/View Internet Information  Client/server programs  Browsers Internet Explorer Internet Explorer Netscape Netscape  The Internet address (URL) Identifies location of server site Identifies location of server site Files are downloaded for viewing Files are downloaded for viewing

Quit 7.13 Uniform Resource Locator DomainName Directory Filename AccessMethodOrProtocol

Quit 7.14 URL: Access Methods Hypertext Transport Protocol ftp:// File Transfer Protocol news:// Newsgroups gopher:// Gopher menu tree

Quit 7.15 Affiliation Commercial Education Businesses Government International Military Network Resources Nonprofit Organizations ID.com.edu.firm.gov.int.mil.net.org URL: Top-Level Domains (TLDs)

Quit 7.16HTML   HyperText Markup Language   Scripting language   Interpreted by browsers   XHTML   ASCII text documents   Tags Title text

Quit 7.17 Are you addicted to the Net?

Quit 7.18 Browser Functions  Retrieve & view Internet-based info  Interact with servers  View electronic documents HTML/XHTML HTML/XHTML Applets or ActiveX controls Applets or ActiveX controls  Download and upload info   Newsgroups

Quit 7.19 Browser Concepts  Web Site Home page Home page Page Page Graphics, text, audio, video, animation Graphics, text, audio, video, animation  Hyperlinks Hypertext, hot images, hot icons Hypertext, hot images, hot icons  Search Engines

Quit 7.20 Browser Elements Menu Bar WorkspaceWorkspace URL Bar ToolbarToolbar Status Bar

Quit 7.21 Browser Plugins  Enhance functionality of browsers  Shockwave Player  Flash Player  RealJukebox  RealPlayer  Liquid Player  Quicktime  iPIX  Movies  Acrobat Reader

Quit 7.22 Finding Resources & Information  Browsing the Net Start with a portal (Yahoo) Start with a portal (Yahoo) Divided into major categories Divided into major categories  Searching hints: Read search rules Read search rules Try another search engine Try another search engine Results seldom exhaustive Results seldom exhaustive Choose search words carefully Choose search words carefully BE PERSISTENT! BE PERSISTENT!  Ask someone – FAQs, newsgroups Going Online

Quit 7.23 Search Tools  Yahoo  Infoseek  Google  AltaVista  Excite  Northern Light  HotBot  Ask Jeeves  Snap  MSN  Netscape Search  Metacrawler  Dogpile

Quit 7.24 Internet Applications  User-friendly  Multimedia  Hyperlinks  Interactive  Frames Web Servers  File Transfer Protocol  Download/upload files  Anonymous FTP GopherGopherTelnetTelnet FTPFTP

Quit 7.25Webcasting  Radio broadcasting  Real-time audio streaming  Pull vs. push technology

Quit 7.26 Digital Jukebox  Software Microsoft Microsoft Real Networks Real Networks  Download to MP3 players  Can also play videos  Software Microsoft Microsoft Real Networks Real Networks  Download to MP3 players  Can also play videos

Quit 7.27 Communicating With People   USENET Newsgroups Bulletin boards Bulletin boards Threads Threads  Mailing lists or listservs  Internet relay chat (IRC)  Audio mail  Internet Telephone User Location Service User Location Service Conferencing Conferencing Whiteboarding Whiteboarding Application Sharing Application Sharing  Videophone/video conferencing  Instant messaging

Quit 7.28  or e- mail server  The message  response options  Post Office Protocol Telecommuting To CC: and/or BCC:) SubjectMessage Attached file(s) Reply Reply to all Forward

Computers: Information Technology in Perspective By Long and Long Copyright 2002 Prentice Hall, Inc. Going Online The End

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