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CSE 101 – Fall 2007 INTRODUCTION TO COMPUTERS AND INFORMATION TECHNOLOGIES The Internet

CSE 101 – Fall 2007 INTRODUCTION TO COMPUTERS AND INFORMATION TECHNOLOGIES The Internet. Cape Breton, Nova Scotia. Installing SSH for own PC. Lots of software for you to download from school license http://clientsupport.stonybrook.edu/software.shtml Click on “To to Softweb”

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CSE 101 – Fall 2007 INTRODUCTION TO COMPUTERS AND INFORMATION TECHNOLOGIES The Internet

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  1. CSE 101 – Fall 2007INTRODUCTION TO COMPUTERS AND INFORMATION TECHNOLOGIESThe Internet Cape Breton, Nova Scotia

  2. Installing SSH for own PC • Lots of software for you to download from school license • http://clientsupport.stonybrook.edu/software.shtml • Click on “To to Softweb” • http://softweb.cc.sunysb.edu/ • Enter login info: • Username: SOLAR ID • Password: Your Birthdate (YYMMDD) • Once in, click on “SSH” • Click on “SSH Win 3.2.9 Client” • Run Executable

  3. 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 • 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…

  4. 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

  5. Narrowband • Dialup Service • Available to anyone with POTS • Plain old telephone service • Data transmissions are up to 56K bps

  6. Broadband • 15 to 30 times faster than narrowband • Broadband is always on • Broadband options • Cable • DSL • Satellite • Wireless

  7. The Link to the Internet • Commercial Information Service • AOL is an example • Monthly service charge • Communications software needed • User ID and password

  8. 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

  9. 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

  10. 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

  11. 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

  12. http://www.annex.com/southwest/museum.htm Document Path (Directory or Folder) Internet Address (Web site) Means of access, HyperText Transfer Protocol The Internet Address: URL

  13. HTML: Putting the Page Together • HTML is a scripting language • <HTML> </HTML> • Must be at beginning and end of the Web page • Head: <Head> </Head> • Includes: basic document info • Other HTML: • <Title></Title> • <Body BGCOLOR= “Beige”> • <H1></H1> • <P>

  14. Tool Bar Menu Bar Address Bar Hyperlink Status Bar Internet Browsers

  15. Concepts and Features • Hyperlinks • Provide text, graphics, sound, or video links • Blue underlined fonts are unexplored • Magenta links have been previously accessed www.microsoft.com www.microsoft.com

  16. Internet Servers and Addresses • HTTP: Hypertext Transfer Protocol • FTP: File Transfer Protocol • News: Newsgroups • Gopher: Gopher menu tree

  17. 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 Browsers Plugins

  18. Internet Resources and Applications • Portals • Libraries • Online Magazines and Journals • Arts • Travel • Government • News • And more…

  19. 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 www.yahoo.com www.infoseek.com www.google.com www.altavista.com www.hotbot.com Lots more… Finding Resources

  20. Internet Applications • WWW • Internet system • User friendly • Multimedia • Interactive • FTP • Download files • Upload files • Webcasting • Audio signals

  21. Communication with People over the Net: E-Mail Menu Bar Toolbar Shortcuts Inbox Message Attachment

  22. Communication with People over the Net: Audio Mail Menu Bar Video Text Chat Sound Control Microphone Control Type Here

  23. Communication with People over the Net • USENET Newsgroups • Bulletin boards • Threads • Mailing lists or listservs • Subscription service • Push technology

  24. Communication with People over the Net: Internet Relay Chat: IRC Typed messages People online Format choices Type message

  25. Instant Messaging & Internet Telephone Private Messages Video Audio

  26. Avoid ALL CAPS Never send spam Be sensitive Never send personal information via e-mail 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 Communication with People over the Net: Cybertalk and Netiquette

  27. .com .edu .firm .gov .int .mil .net .org Cruising the Net Commercial Education Businesses Government International Military Network Resources Nonprofit Organizations

  28. Summary • The Internet • Internet Browsers • Internet Resources and Applications

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