Copyright Prentice Hall, Inc. 1 Computers: Information Technology in Perspective, 11e Larry Long and Nancy Long Chapter 3 Going Online

Copyright Prentice Hall, Inc.2 Objectives Once you have read and studied this chapter, you will have learned:  The scope of the online world and some of its many opportunities, plus Internet concepts, including how to go online and the makeup of an Internet address.  How you can use Internet browsers to access a wealth of information on the Internet.  The scope of Internet resources and the various types of Internet applications, including the World Wide Web, FTP, , instant messaging, newsgroups, and videoconferencing.

Copyright Prentice Hall, Inc.3 Why this chapter is important to you! Learning how to go online will open many doors to information Learning how to go online can change how you learn, shop, communicate, and work for the better Learning how to go online to search for jobs could land you that dream job

Copyright Prentice Hall, Inc.4 The Internet The Internet is a network of networks It began in 1969 as ARPAnet (Advanced Research Projects Agency) No central authority and thus impossible to state the precise size The Internet is not free just because you do not pay for it When you go online you have access to billions of pages of information and resources, such as:  Research on just about any topic  Current weather anywhere in the world  Travel arrangements  Health information  Shopping for anything and everything  Services  And lots more…

Copyright Prentice Hall, Inc.5 Connecting to the Internet Channels carry digital signals between computers and over the Internet Bandwidth is the number of bits a line can transmit per second Broadband  High bandwidth Narrowband  Low bandwidth

Copyright Prentice Hall, Inc.6 Narrowband Dialup Service  Available to anyone with POTS Plain old telephone service Data transmissions are up to 56K bps

Copyright Prentice Hall, Inc.7 Broadband 15 to 30 times faster than narrowband Broadband is always on Broadband options  Cable  DSL  Satellite  Wireless

Copyright Prentice Hall, Inc.8 The Link to the Internet Commercial Information Service  AOL is an example  Monthly service charge  Communications software needed  User ID and password

Copyright Prentice Hall, Inc.9 The Link to the Internet Internet Service Provider  Provides access to the Internet  Low-speed dialup or high-speed connection  ISPs: Commercial Enterprises Colleges Churches

Copyright Prentice Hall, Inc.10 TCP/IP and Packets TCP/IP is the communications protocol that permits data transmission over the Internet Data is sent in packets Each POP has an IP address for packet delivery

Copyright Prentice Hall, Inc.11 Going Online Without a PC Go online with your TV Go online with your game device Go online with an Internet appliance Going online with your cell phone

Copyright Prentice Hall, Inc.12 Retrieving and Viewing Information on the Internet To go online you need a client Internet Explorer or Netscape is a client You can give the browser a URL to find a site or search for a site

Copyright Prentice Hall, Inc.13 The Internet Address: URL Means of access, HyperText Transfer Protocol Internet Address (Web site) Document Path (Directory or Folder)

Copyright Prentice Hall, Inc.14 HTML: Putting the Page Together HTML is a scripting language  Must be at beginning and end of the Web page Head:  Includes: basic document info Other HTML: 

Copyright Prentice Hall, Inc.15 Internet Browsers Status Bar Menu Bar Tool Bar Address Bar Hyperlink

Copyright Prentice Hall, Inc.16 Concepts and Features Hyperlinks  Provide text, graphics, sound, or video links  Blue underlined fonts are unexplored  Magenta links have been previously accessed

Copyright Prentice Hall, Inc.17 Internet Servers and Addresses HTTP: Hypertext Transfer Protocol FTP: File Transfer Protocol News: Newsgroups Gopher: Gopher menu tree

Copyright Prentice Hall, Inc.18 Browsers Plugins Shockwave Player  Displays Web content Flash Player  View Flash content RealJukebox  Play and record MP3 music LiquidPlayer  Play and record MP3 music  Read lyrics  Organize your music RealPlayer  Listen to streaming audio  View streaming video QuickTime  View QuickTime videos  Listen to music iPIX  View an image from every direction Acrobat Reader  Displays PDF documents

Copyright Prentice Hall, Inc.19 Internet Resources and Applications Portals Libraries Online Magazines and Journals Arts Travel Government News And more…

Copyright Prentice Hall, Inc.20 Finding Resources Use the Search button on the Internet Explorer Toolbar Try multiple search engines on one query Be aware of logical operators - AND, OR, and NOT Search on a concept: e.g., “first ladies” rather than “Eleanor Roosevelt” Set Bookmarks/Favorites Search Engines       Lots more…

Copyright Prentice Hall, Inc.21 Internet Applications WWW  Internet system User friendly Multimedia Interactive  FTP Download files Upload files  Webcasting Audio signals

Copyright Prentice Hall, Inc.22 Communication with People over the Net: Message Inbox Shortcuts Toolbar Menu Bar Attachment

Copyright Prentice Hall, Inc.23 Communication with People over the Net: Audio Mail Microphone Control Sound Control Text Chat Video Menu Bar Type Here

Copyright Prentice Hall, Inc.24 Communication with People over the Net USENET Newsgroups  Bulletin boards  Threads Mailing lists or listservs  Subscription service  Push technology

Copyright Prentice Hall, Inc.25 Communication with People over the Net: Internet Relay Chat: IRC Type message Format choices People online Typed messages

Copyright Prentice Hall, Inc.26 Instant Messaging & Internet Telephone Messages Private Video Audio

Copyright Prentice Hall, Inc.27 Communication with People over the Net: Cybertalk and Netiquette Avoid ALL CAPS Never send spam Be sensitive Never send personal information via Be patient Avoid correcting e- mail errors, such as spelling Honor privacy Think twice about sending large files Never forward a virus Use antivirus software

Copyright Prentice Hall, Inc.28 Cruising the Net Commercial Education Businesses Government International Military Network Resources Nonprofit Organizations.com.edu.firm.gov.int.mil.net.org

Copyright Prentice Hall, Inc.29 Summary The Internet Internet Browsers Internet Resources and Applications