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Introduction To The Internet
 

Introduction To The Internet

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PPT for Sims Library's Computer Class series

PPT for Sims Library's Computer Class series

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Introduction To The Internet Introduction To The Internet Presentation Transcript

  • Introduction to the Internet ©2010 S.Estey
  • What Will We Learn?
    • What the Internet is
    • What the World Wide Web is
    • How to use Internet Explorer
    • How to search the Internet
    • How to troubleshoot searches on the Internet
  • What is the Internet?
    • Computers that are linked together around the world.
    • The physical hardware (servers, modems, wires, etc) that allows you to find documents and communicate with other computers.
    • The Internet does NOT contain information. It is simply the pathway.
  • What is the World Wide Web?
    • It is the actual information that can be accessed through the Internet.
    • It is decentralized. There is no one controlling body.
    • There are organizations that control parts of the Internet, but no one controls the information on the World Wide Web.
  • Information on the W W W
    • Documents
    • Images
    • Audio
    • Video
    • Email
  • Internet Explorer
    • Most common web browser
    • Available with all Windows versions.
    • Most people create web pages best viewed on this browser
    • Other browsers are available for free to download from the Web
  • Internet Explorer Close Maximize/Resize Minimize Menu Bar Task Bar Status Bar Start Button Scroll Bar Address/URL Bar Navigational Tool Bar Clock Title Bar
    • Reload a page
    • Go to the Home page
    • Opens the search window
    • Prints the current page
    • “ go” to an address
    • Go back one page
    • Go forward one page
    • Stop an activity
    Navigation Toolbar
  • Viewing a Web Page
    • Web users use a browser on a computer connected to the Internet.
    • The user enters an address (URL) into the browser’s address bar.
    • The browser communicates with the server to get the information requested by the user.
  • URL
    • U niform R esource L ocator
    • Like a street address for websites. All are unique.
    • http:// www.simslib.org/depts/adult.htm
      • http: = protocol
      • simslib.org = domain name
      • depts = folder
      • adult = file name
      • html = file extension
  • Domain Name
    • Text equivalent of IP address.
    • Keeps users from having to memorize long strings of numbers.
    • In our example, simslib.org is the domain name for the website.
  • Top Level Domains
    • There are approximately 14 different top level domains.
    • In our example, .org is the top level domain.
    • Let you know quickly what kind of website it is.
    • .com, .edu, .gov, .int, .mil, .net, .org, .aero, .coop, .museum, .biz, .info, .name, and .pro
    • Countries also have their own domains.
  • Hyperlinks
    • Contained in web pages
    • Usually underlined and different color
    • Allows quick navigation through a website or to a new website
    • Not always different color or underlined.
    • The mouse will turn into a hand shape when moved over a link.
  • Strengths
    • Current information
    • Global information
    • Some information only available on the Web
    • Interactive media sources
    • Fast results
    • Out of date
    • Reliability?
    • Overwhelming number of sources
    • Authority of sources
    • Technical issues
    Weaknesses
  • Tools for Searching the Web
    • Search Engines
      • Compiled by software that scans, or “crawls” and indexes pages
      • Not organized in any real way
      • www.google.com , www.alltheweb.com , www.search.msn.com , www.dogpile.com
    • Directories
      • Compiled by groups of people; “human-powered results”
      • Sites classified by subject
      • www.yahoo.com , www.lii.org , www.ipl.org , www.about.com
  • More about Searching Tools
    • There is no comprehensive search engine or directory.
    • There will be broken links in your results.
    • There will be an overwhelming number of results.
    • Watch for “sponsored links”.
  • Searching Tips
    • Use Booleans (and, or, not)
    • Keep phrases in quotes
    • Use specific search terms
    • Capitalization is not important
    • Some search engines and directories have an “advanced search” option.
  • Troubleshooting
    • Error messages
      • File Not Found
      • Internet Explorer cannot open the Internet site…
      • A connection with the server could not be established
  • Troubleshooting
    • The file you are trying to get to may have been moved or deleted.
    • It may be temporarily unavailable because of technical issues.
    • It may be a spelling or punctuation error.
    • The link could have expired.
  • What Have We Learned?
    • What the Internet is
    • What the World Wide Web is
    • How to use Internet Explorer
    • How to search the Internet
    • How to troubleshoot searches on the Internet
  • Practice
    • Please fill out the evaluation sheet in the back of your packet and turn it in to the teacher or Reference desk.
    • PRACTICE or you will forget the skills you learned today!