Introduction To The Internet


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PPT for Sims Library's Computer Class series

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  • Introduction To The Internet

    1. 1. Introduction to the Internet ©2010 S.Estey
    2. 2. What Will We Learn? <ul><li>What the Internet is </li></ul><ul><li>What the World Wide Web is </li></ul><ul><li>How to use Internet Explorer </li></ul><ul><li>How to search the Internet </li></ul><ul><li>How to troubleshoot searches on the Internet </li></ul>
    3. 3. What is the Internet? <ul><li>Computers that are linked together around the world. </li></ul><ul><li>The physical hardware (servers, modems, wires, etc) that allows you to find documents and communicate with other computers. </li></ul><ul><li>The Internet does NOT contain information. It is simply the pathway. </li></ul>
    4. 4. What is the World Wide Web? <ul><li>It is the actual information that can be accessed through the Internet. </li></ul><ul><li>It is decentralized. There is no one controlling body. </li></ul><ul><li>There are organizations that control parts of the Internet, but no one controls the information on the World Wide Web. </li></ul>
    5. 5. Information on the W W W <ul><li>Documents </li></ul><ul><li>Images </li></ul><ul><li>Audio </li></ul><ul><li>Video </li></ul><ul><li>Email </li></ul>
    6. 6. Internet Explorer <ul><li>Most common web browser </li></ul><ul><li>Available with all Windows versions. </li></ul><ul><li>Most people create web pages best viewed on this browser </li></ul><ul><li>Other browsers are available for free to download from the Web </li></ul>
    7. 7. 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
    8. 8. <ul><li>Reload a page </li></ul><ul><li>Go to the Home page </li></ul><ul><li>Opens the search window </li></ul><ul><li>Prints the current page </li></ul><ul><li>“ go” to an address </li></ul><ul><li>Go back one page </li></ul><ul><li>Go forward one page </li></ul><ul><li>Stop an activity </li></ul>Navigation Toolbar
    9. 9. Viewing a Web Page <ul><li>Web users use a browser on a computer connected to the Internet. </li></ul><ul><li>The user enters an address (URL) into the browser’s address bar. </li></ul><ul><li>The browser communicates with the server to get the information requested by the user. </li></ul>
    10. 10. URL <ul><li>U niform R esource L ocator </li></ul><ul><li>Like a street address for websites. All are unique. </li></ul><ul><li>http:// </li></ul><ul><ul><li>http: = protocol </li></ul></ul><ul><ul><li> = domain name </li></ul></ul><ul><ul><li>depts = folder </li></ul></ul><ul><ul><li>adult = file name </li></ul></ul><ul><ul><li>html = file extension </li></ul></ul>
    11. 11. Domain Name <ul><li>Text equivalent of IP address. </li></ul><ul><li>Keeps users from having to memorize long strings of numbers. </li></ul><ul><li>In our example, is the domain name for the website. </li></ul>
    12. 12. Top Level Domains <ul><li>There are approximately 14 different top level domains. </li></ul><ul><li>In our example, .org is the top level domain. </li></ul><ul><li>Let you know quickly what kind of website it is. </li></ul><ul><li>.com, .edu, .gov, .int, .mil, .net, .org, .aero, .coop, .museum, .biz, .info, .name, and .pro </li></ul><ul><li>Countries also have their own domains. </li></ul>
    13. 13. Hyperlinks <ul><li>Contained in web pages </li></ul><ul><li>Usually underlined and different color </li></ul><ul><li>Allows quick navigation through a website or to a new website </li></ul><ul><li>Not always different color or underlined. </li></ul><ul><li>The mouse will turn into a hand shape when moved over a link. </li></ul>
    14. 14. Strengths <ul><li>Current information </li></ul><ul><li>Global information </li></ul><ul><li>Some information only available on the Web </li></ul><ul><li>Interactive media sources </li></ul><ul><li>Fast results </li></ul><ul><li>Out of date </li></ul><ul><li>Reliability? </li></ul><ul><li>Overwhelming number of sources </li></ul><ul><li>Authority of sources </li></ul><ul><li>Technical issues </li></ul>Weaknesses
    15. 15. Tools for Searching the Web <ul><li>Search Engines </li></ul><ul><ul><li>Compiled by software that scans, or “crawls” and indexes pages </li></ul></ul><ul><ul><li>Not organized in any real way </li></ul></ul><ul><ul><li> , , , </li></ul></ul><ul><li>Directories </li></ul><ul><ul><li>Compiled by groups of people; “human-powered results” </li></ul></ul><ul><ul><li>Sites classified by subject </li></ul></ul><ul><ul><li> , , , </li></ul></ul>
    16. 16. More about Searching Tools <ul><li>There is no comprehensive search engine or directory. </li></ul><ul><li>There will be broken links in your results. </li></ul><ul><li>There will be an overwhelming number of results. </li></ul><ul><li>Watch for “sponsored links”. </li></ul>
    17. 17. Searching Tips <ul><li>Use Booleans (and, or, not) </li></ul><ul><li>Keep phrases in quotes </li></ul><ul><li>Use specific search terms </li></ul><ul><li>Capitalization is not important </li></ul><ul><li>Some search engines and directories have an “advanced search” option. </li></ul>
    18. 18. Troubleshooting <ul><li>Error messages </li></ul><ul><ul><li>File Not Found </li></ul></ul><ul><ul><li>Internet Explorer cannot open the Internet site… </li></ul></ul><ul><ul><li>A connection with the server could not be established </li></ul></ul>
    19. 19. Troubleshooting <ul><li>The file you are trying to get to may have been moved or deleted. </li></ul><ul><li>It may be temporarily unavailable because of technical issues. </li></ul><ul><li>It may be a spelling or punctuation error. </li></ul><ul><li>The link could have expired. </li></ul>
    20. 20. What Have We Learned? <ul><li>What the Internet is </li></ul><ul><li>What the World Wide Web is </li></ul><ul><li>How to use Internet Explorer </li></ul><ul><li>How to search the Internet </li></ul><ul><li>How to troubleshoot searches on the Internet </li></ul>
    21. 21. Practice <ul><li>Please fill out the evaluation sheet in the back of your packet and turn it in to the teacher or Reference desk. </li></ul><ul><li>PRACTICE or you will forget the skills you learned today! </li></ul>