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Discovering    Computers 2011    Living in a Digital World
Objectives Overview                                          Identify and briefly describe                                ...
Objectives Overview                                  Explain how Web pages use                                            ...
The Internet• The Internet is a worldwide collection of networks  that links millions of businesses, government  agencies,...
Evolution of the Internet• The Internet originated as ARPANET in September  1969 and had two main goals:            Allow ...
Evolution of the Internet                                1986 NSF                                connects                 ...
Evolution of the Internet• Each organization is responsible only for  maintaining its own network      – The World Wide We...
Evolution of the Internet• Many home and small business users connect to  the Internet via high-speed broadband Internet  ...
Evolution of the Internet• An access provider is a business that provides individuals  and organizations access to the Int...
Evolution of the Internet                                                                                               Wi...
Evolution of the InternetPage 79      Discovering Computers 2011: Living in a Digital World   11Figure 2-3                ...
Evolution of the Internet• An IP address is a number that uniquely identifies each  computer or device connected to the In...
Evolution of the InternetPage 80      Discovering Computers 2011: Living in a Digital World   13Figure 2-5                ...
The World Wide Web• The World Wide Web, or Web, consists of a  worldwide collection of electronic documents  (Web pages)• ...
The World Wide Web• A Web browser, or browser, allows users to  access Web pages and Web 2.0 programs          Internet   ...
The World Wide WebPage 81      Discovering Computers 2011: Living in a Digital World   16Figure 2-6                       ...
The World Wide Web     • A home page is the first                                             • Some Web pages are       p...
The World Wide Web• A Web page has a unique address called a URL or  Web addressPages 82 – 83   Discovering Computers 2011...
The World Wide Web• Tabbed browsing allows you to open and view multiple  Web pages in a single Web browser window        ...
The World Wide Web• Two types of search tools are search engines and  subject directories          Search                 ...
The World Wide WebPage 85       Discovering Computers 2011: Living in a Digital World   21Figure 2-10                     ...
The World Wide Web• A search engine is helpful in locating items such  as:    Images          Videos                      ...
The World Wide WebPage 86       Discovering Computers 2011: Living in a Digital World   23Figure 2-11                     ...
The World Wide Web• Some Web browsers contain an Instant Search  box to eliminate the steps of displaying the search  engi...
The World Wide Web• Search operators can help to refine your searchPage 87         Discovering Computers 2011: Living in a...
The World Wide Web• There are thirteen types of Web sites                Portal       News                         Informa...
The World Wide Web                Entertainment                Advocacy                            Web                    ...
The World Wide Web     • Information presented       on the Web must be       evaluated for accuracy     • No one oversees...
The World Wide Web• Multimedia refers to any application that  combines text with:Page 92         Discovering Computers 20...
The World Wide Web     • A graphic is a digital       representation of       nontext information     • Graphic formats in...
The World Wide Web     • A thumbnail is a small       version of a larger       graphicPage 94              Discovering Co...
The World Wide Web• Animation is the appearance of motion created  by displaying a series of still images in sequencePage ...
The World Wide Web• Audio includes music, speech, or any other sound       – Compressed to reduce file size• You listen to...
The World Wide WebPage 95       Discovering Computers 2011: Living in a Digital World   34Figure 2-21                     ...
The World Wide Web• Video consists of full-motion images that are  played back at various speeds              Click to vie...
The World Wide Web• Virtual reality (VR) is the use of computers to  simulate a real or imagined environment that  appears...
The World Wide Web• A plug-in is a program that extends the capability  of a Web browserPage 97         Discovering Comput...
The World Wide Web• Web publishing is the development and  maintenance of Web pages                                   Anal...
E-Commerce• E-commerce is a business transaction that occurs  over an electronic network      – M-commerce identifies e-co...
E-Commerce                                      Business-                                         to-                     ...
E-Commerce              Click to view Web Link,              click Chapter 2, Click Web              Link from left naviga...
Other Internet Services     • E-mail is the       transmission of       messages and files via a       computer network   ...
Other Internet ServicesPage 102      Discovering Computers 2011: Living in a Digital World   43Figure 2-27                ...
Other Internet Services• A mailing list is a group of e-mail names and addresses  given a single name       – Subscribing ...
Other Internet Services• Instant messaging (IM) is a real-time Internet  communications servicePage 104        Discovering...
Other Internet Services    • A chat is a real-time      typed conversation that      takes place on a      computer    • A...
Other Internet Services    • VoIP (Voice over IP)      enables users to speak      to other users over the      Internet  ...
Other Internet Services    • A newsgroup is an      online area in which      users have written      discussions about a ...
Other Internet Services• FTP (File Transfer Protocol) is an Internet standard  that permits file uploading and downloading...
Netiquette• Netiquette is the code of acceptable Internet  behavior              Click to view Web Link,              clic...
Summary                                                                                   Browsing, navigating,History and...
Discovering    Computers 2011    Living in a Digital World    Chapter 2 Complete
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Internet and World Wide Web

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Transcript of "Internet and World Wide Web"

  1. 1. Discovering Computers 2011 Living in a Digital World
  2. 2. Objectives Overview Identify and briefly describe various broadband Internet Discuss the evolution of the connections and state Describe the types of Internet Internet differences between broadband access providers Internet connections and dial- up connections Describe how to use a search Describe the purpose of an IP Explain the purpose of a Web engine to search foraddress and its relationship to a browser and identify the information on the Web and domain name components of a Web address differentiate between a search engine and a subject directorySee Page 73 Discovering Computers 2011: Living in a Digital World 2for Detailed Objectives Chapter 2
  3. 3. Objectives Overview Explain how Web pages use Identify and briefly describe Describe the types of Web graphics, animation, audio, the steps required for Web sites video, virtual reality, and publishing plug-ins Explain how e-mail, mailing lists, instant messaging, Describe the types of e- Identify the rules of chat rooms, VoIP, commerce netiquette newsgroups and message boards, and FTP workSee Page 73 Discovering Computers 2011: Living in a Digital World 3for Detailed Objectives Chapter 2
  4. 4. The Internet• The Internet is a worldwide collection of networks that links millions of businesses, government agencies, educational institutions, and individualsPage 74 Discovering Computers 2011: Living in a Digital World 4Figure 2-1 Chapter 2
  5. 5. Evolution of the Internet• The Internet originated as ARPANET in September 1969 and had two main goals: Allow scientists at Function even if part of different physical the network were locations to share disabled or destroyed information and work by a disaster togetherPage 75 Discovering Computers 2011: Living in a Digital World 5 Chapter 2
  6. 6. Evolution of the Internet 1986 NSF connects NSFnet to 1969 ARPANET and ARPANET becomes 1996 becomes known as the Internet2 is functional Internet founded 1984 1995 NSFNet Today More ARPANET has terminates than 550 more than its network million hosts 1,000 on the connect to individual Internet and the Internet computers resumes linked as status as hosts research networkPages 75 - 76 Discovering Computers 2011: Living in a Digital World 6 Chapter 2
  7. 7. Evolution of the Internet• Each organization is responsible only for maintaining its own network – The World Wide Web Consortium (W3C) oversees research and sets guidelines and standards• Internet2 connects more than 200 universities and 115 companies via a high-speed private network Click to view Web Link, click Chapter 2, Click Web Link from left navigation, then click W3C below Chapter 2Page 76 Discovering Computers 2011: Living in a Digital World 7 Chapter 2
  8. 8. Evolution of the Internet• Many home and small business users connect to the Internet via high-speed broadband Internet service Fiber to Cable Cellular Satellite the FixedInternet DSL Radio Wi-Fi Internet Premises wireless service Network Service (FTTP)Page 76 Discovering Computers 2011: Living in a Digital World 8 Chapter 2
  9. 9. Evolution of the Internet• An access provider is a business that provides individuals and organizations access to the Internet free or for a feePage 77 Discovering Computers 2011: Living in a Digital World 9Figure 2-2 Chapter 2
  10. 10. Evolution of the Internet Wireless InternetISP (Internet service Online service service provider provider) provider (OSP) (WISP) Regional ISPs provide Provides wireless Internet access to a Has many members- Internet access to specific geographical only features computers and area mobile devices National ISPs provide Popular OSPs include Internet access in AOL (America Online) May require a cities and towns and MSN (Microsoft wireless modem nationwide Network) Click to view Web Link, click Chapter 2, Click Web Link from left navigation, then click Wireless Modems below Chapter 2Page 78 Discovering Computers 2011: Living in a Digital World 10 Chapter 2
  11. 11. Evolution of the InternetPage 79 Discovering Computers 2011: Living in a Digital World 11Figure 2-3 Chapter 2
  12. 12. Evolution of the Internet• An IP address is a number that uniquely identifies each computer or device connected to the Internet• A domain name is the text version of an IP address – Top-level domain (TLD)• A DNS server translates the domain name into its associated IP addressPages 79 – 80 Discovering Computers 2011: Living in a Digital World 12Figure 2-4 Chapter 2
  13. 13. Evolution of the InternetPage 80 Discovering Computers 2011: Living in a Digital World 13Figure 2-5 Chapter 2
  14. 14. The World Wide Web• The World Wide Web, or Web, consists of a worldwide collection of electronic documents (Web pages)• A Web site is a collection of related Web pages and associated items• A Web server is a computer that delivers requested Web pages to your computer• Web 2.0 refers to Web sites that provide a means for users to interactPages 80 - 81 Discovering Computers 2011: Living in a Digital World 14 Chapter 2
  15. 15. The World Wide Web• A Web browser, or browser, allows users to access Web pages and Web 2.0 programs Internet Firefox Opera Explorer Google Safari ChromePage 81 Discovering Computers 2011: Living in a Digital World 15 Chapter 2
  16. 16. The World Wide WebPage 81 Discovering Computers 2011: Living in a Digital World 16Figure 2-6 Chapter 2
  17. 17. The World Wide Web • A home page is the first • Some Web pages are page that a Web site designed specifically for displays microbrowsers • Web pages provide links to other related Web pages – Surfing the Web • Downloading is the process of receiving information Click to view Web Link, click Chapter 2, Click Web Link from left navigation, then click iPhone below Chapter 2Pages 82 - 83 Discovering Computers 2011: Living in a Digital World 17Figure 2-7 Chapter 2
  18. 18. The World Wide Web• A Web page has a unique address called a URL or Web addressPages 82 – 83 Discovering Computers 2011: Living in a Digital World 18Figure 2-8 Chapter 2
  19. 19. The World Wide Web• Tabbed browsing allows you to open and view multiple Web pages in a single Web browser window Click to view Web Link, click Chapter 2, Click Web Link from left navigation, then click Tabbed Browsing below Chapter 2Page 84 Discovering Computers 2011: Living in a Digital World 19Figure 2-9 Chapter 2
  20. 20. The World Wide Web• Two types of search tools are search engines and subject directories Search Subject engine directory Classifies Web Finds information pages in an related to a organized set of specific topic categoriesPage 85 Discovering Computers 2011: Living in a Digital World 20 Chapter 2
  21. 21. The World Wide WebPage 85 Discovering Computers 2011: Living in a Digital World 21Figure 2-10 Chapter 2
  22. 22. The World Wide Web• A search engine is helpful in locating items such as: Images Videos Audio News People or Maps Blogs BusinessesPage 85 Discovering Computers 2011: Living in a Digital World 22 Chapter 2
  23. 23. The World Wide WebPage 86 Discovering Computers 2011: Living in a Digital World 23Figure 2-11 Chapter 2
  24. 24. The World Wide Web• Some Web browsers contain an Instant Search box to eliminate the steps of displaying the search engine’s Web page prior to entering the search textPage 87 Discovering Computers 2011: Living in a Digital World 24Figure 2-12 Chapter 2
  25. 25. The World Wide Web• Search operators can help to refine your searchPage 87 Discovering Computers 2011: Living in a Digital World 25Figure 2-13 Chapter 2
  26. 26. The World Wide Web• There are thirteen types of Web sites Portal News Informational Business/Marketing Blog Wiki Online Social Educational NetworkPages 88 – 91 Discovering Computers 2011: Living in a Digital World 26Figure 2-15 Chapter 2
  27. 27. The World Wide Web Entertainment Advocacy Web Application Content Personal AggregatorPages 91 – 92 Discovering Computers 2011: Living in a Digital World 27Figure 2-15 Chapter 2
  28. 28. The World Wide Web • Information presented on the Web must be evaluated for accuracy • No one oversees the content of Web pagesPage 92 Discovering Computers 2011: Living in a Digital World 28Figure 2-16 Chapter 2
  29. 29. The World Wide Web• Multimedia refers to any application that combines text with:Page 92 Discovering Computers 2011: Living in a Digital World 29 Chapter 2
  30. 30. The World Wide Web • A graphic is a digital representation of nontext information • Graphic formats include BMP, GIF, JPEG, PNG, and TIFFPage 93 Discovering Computers 2011: Living in a Digital World 30Figure 2-17 Chapter 2
  31. 31. The World Wide Web • A thumbnail is a small version of a larger graphicPage 94 Discovering Computers 2011: Living in a Digital World 31Figure 2-19 Chapter 2
  32. 32. The World Wide Web• Animation is the appearance of motion created by displaying a series of still images in sequencePage 94 Discovering Computers 2011: Living in a Digital World 32 Chapter 2
  33. 33. The World Wide Web• Audio includes music, speech, or any other sound – Compressed to reduce file size• You listen to audio on your computer using a player• Streaming is the process of transferring data in a continuous and even flowPages 94 – 95 Discovering Computers 2011: Living in a Digital World 33Figure 2-20 Chapter 2
  34. 34. The World Wide WebPage 95 Discovering Computers 2011: Living in a Digital World 34Figure 2-21 Chapter 2
  35. 35. The World Wide Web• Video consists of full-motion images that are played back at various speeds Click to view Web Link, click Chapter 2, Click Web Link from left navigation, then click YouTube below Chapter 2Page 96 Discovering Computers 2011: Living in a Digital World 35Figure 2-22 Chapter 2
  36. 36. The World Wide Web• Virtual reality (VR) is the use of computers to simulate a real or imagined environment that appears as a three-dimensional spacePages 96 – 97 Discovering Computers 2011: Living in a Digital World 36Figure 2-23 Chapter 2
  37. 37. The World Wide Web• A plug-in is a program that extends the capability of a Web browserPage 97 Discovering Computers 2011: Living in a Digital World 37Figure 2-24 Chapter 2
  38. 38. The World Wide Web• Web publishing is the development and maintenance of Web pages Analyze Maintain Plan a and Create a Deploy a a Web Web site design a Web site Web site site Web site Click to view Web Link, click Chapter 2, Click Web Link from left navigation, then click Web Page Authoring Software below Chapter 2Page 98 Discovering Computers 2011: Living in a Digital World 38 Chapter 2
  39. 39. E-Commerce• E-commerce is a business transaction that occurs over an electronic network – M-commerce identifies e-commerce that takes place using mobile devicesPage 98 Discovering Computers 2011: Living in a Digital World 39 Chapter 2
  40. 40. E-Commerce Business- to- consumer (B2C) E-commerce Business- Consumer- to- to- business consumer (B2B) (C2C)Pages 98 - 99 Discovering Computers 2011: Living in a Digital World 40 Chapter 2
  41. 41. E-Commerce Click to view Web Link, click Chapter 2, Click Web Link from left navigation, then click Google Checkout Software below Chapter 2Page 99 Discovering Computers 2011: Living in a Digital World 41Figure 2-25 Chapter 2
  42. 42. Other Internet Services • E-mail is the transmission of messages and files via a computer network • An e-mail program allows you to create, send, receive, forward, store, print, and delete e-mail messagesPage 101 Discovering Computers 2011: Living in a Digital World 42Figure 2-26 Chapter 2
  43. 43. Other Internet ServicesPage 102 Discovering Computers 2011: Living in a Digital World 43Figure 2-27 Chapter 2
  44. 44. Other Internet Services• A mailing list is a group of e-mail names and addresses given a single name – Subscribing adds your e-mail name and address – Unsubscribing removes your name Click to view Web Link, click Chapter 2, Click Web Link from left navigation, then click E-Mail below Chapter 2Page 103 Discovering Computers 2011: Living in a Digital World 44Figure 2-28 Chapter 2
  45. 45. Other Internet Services• Instant messaging (IM) is a real-time Internet communications servicePage 104 Discovering Computers 2011: Living in a Digital World 45Figure 2-29 Chapter 2
  46. 46. Other Internet Services • A chat is a real-time typed conversation that takes place on a computer • A chat room is a location on an Internet server that permits users to chat with each other Click to view Web Link, click Chapter 2, Click Web Link from left navigation, then click Chat Rooms below Chapter 2Page 105 Discovering Computers 2011: Living in a Digital World 46Figure 2-30 Chapter 2
  47. 47. Other Internet Services • VoIP (Voice over IP) enables users to speak to other users over the Internet – Also called Internet telephonyPage 106 Discovering Computers 2011: Living in a Digital World 47Figure 2-31 Chapter 2
  48. 48. Other Internet Services • A newsgroup is an online area in which users have written discussions about a particular subject – Typically requires a newsreader • A message board is a Web-based type of discussion groupPage 107 Discovering Computers 2011: Living in a Digital World 48Figure 2-32 Chapter 2
  49. 49. Other Internet Services• FTP (File Transfer Protocol) is an Internet standard that permits file uploading and downloading with other computers on the Internet• Many operating systems include FTP capabilities• An FTP server is a computer that allows users to upload and/or download files using FTP Click to view Web Link, click Chapter 2, Click Web Link from left navigation, then click FTP below Chapter 2Page 107 Discovering Computers 2011: Living in a Digital World 49 Chapter 2
  50. 50. Netiquette• Netiquette is the code of acceptable Internet behavior Click to view Web Link, click Chapter 2, Click Web Link from left navigation, then click Cyberbullying below Chapter 2Page 108 Discovering Computers 2011: Living in a Digital World 50Figure 2-33 Chapter 2
  51. 51. Summary Browsing, navigating,History and structure of searching, Web World Wide Web the Internet publishing, and e-commerce Other Internet services: e-mail, instant messaging, chat rooms, Rules of netiquette VoIP, newsgroups and message boards, and FTPPage 109 Discovering Computers 2011: Living in a Digital World 51 Chapter 2
  52. 52. Discovering Computers 2011 Living in a Digital World Chapter 2 Complete
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