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Objectives Overview

Objectives Overview. See Page 55 for Detailed Objectives. Objectives Overview. See Page 55 for Detailed Objectives. The Internet. The Internet is a worldwide collection of networks that links millions of businesses, government agencies, educational institutions, and individuals.

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Objectives Overview

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  1. Objectives Overview See Page 55 for Detailed Objectives Discovering Computers Fundamentals, 2012 Edition Chapter 2

  2. Objectives Overview See Page 55 for Detailed Objectives Discovering Computers Fundamentals, 2012 Edition Chapter 2

  3. The Internet • The Internet is a worldwide collection of networks that links millions of businesses, government agencies, educational institutions, and individuals Page 56 Figure 2-1 Discovering Computers Fundamentals, 2012 Edition Chapter 2

  4. The Internet • The Internet originated as ARPANET in September 1969 and had two main goals: • The World Wide Web Consortium (W3C) oversees research and sets standards and guidelines for many areas of the Internet. Page 56 Discovering Computers Fundamentals, 2012 Edition Chapter 2

  5. The Internet Page 56 Discovering Computers Fundamentals, 2012 Edition Chapter 2

  6. The Internet • Many home and small business users connect to the Internet via high-speed broadband Internet service. Fixed wireless Internet connections are high-speed, and utilize radio signals, towers, antennae, satellite, etc. Pages 57 - 58 Discovering Computers Fundamentals, 2012 Edition Chapter 2

  7. The Internet Page 58 Discovering Computers Fundamentals, 2012 Edition Chapter 2

  8. The Internet Page 58 Discovering Computers Fundamentals, 2012 Edition Chapter 2

  9. The Internet • Cable modems are always connected to the Internet – versus the slower “dial-up access” from days past. A dial-up modem required the user to use their home phone line to connect to the Internet. • Satellite modems are high-speed Internet connections that communicate via a satellite dish. Page 59 Figure 2-2 Discovering Computers Fundamentals, 2012 Edition Chapter 2

  10. The Internet • An IP addressis a number that uniquely identifies each computer or device connected to the Internet • A domain nameis the text version of an IP address • Top-level domain (TLD) • ADomain Name Server (DNS) translates the domain name (google.com) into its IP address so data route to the correct computer Page 60 Figure 2-3 Discovering Computers Fundamentals, 2012 Edition Chapter 2

  11. The Internet Page 60 Figure 2-4 Discovering Computers Fundamentals, 2012 Edition Chapter 2

  12. The World Wide Web • The World Wide Web, or Web, consists of a worldwide collection of electronic documents (Web pages) • A Web siteis a collection of related Web pages and associated items • A Web serveris a computer that delivers requested Web pages to your computer • Web 2.0refers to Web sites that provide a means for users to interact Page 61 Discovering Computers Fundamentals, 2012 Edition Chapter 2

  13. The World Wide Web • A Web browser, or browser, allows users to access Web pages and Web 2.0 programs Page 61 Discovering Computers Fundamentals, 2012 Edition Chapter 2

  14. The World Wide Web Page 62 Figure 2-5 Discovering Computers Fundamentals, 2012 Edition Chapter 2

  15. The World Wide Web • A home page is the first page that a Web site displays • Web pages provide links to other related Web pages • Surfing the Web • Downloading is the process of receiving information Pages 62 – 64 Discovering Computers Fundamentals, 2012 Edition Chapter 2

  16. The World Wide Web • A Web page has a unique address called a URL or Web address Page 63 Figure 2-6 Discovering Computers Fundamentals, 2012 Edition Chapter 2

  17. The World Wide Web • Tabbed browsingallows you to open and view multiple Web pages in a single Web browser window Page 64 Figure 2-7 Discovering Computers Fundamentals, 2012 Edition Chapter 2

  18. The World Wide Web • Two types of search tools are search engines and subject directories Page 65 Discovering Computers Fundamentals, 2012 Edition Chapter 2

  19. The World Wide Web Page 65 Figure 2-8 Discovering Computers Fundamentals, 2012 Edition Chapter 2

  20. The World Wide Web • A search engine is helpful in locating items such as: Page 66 Discovering Computers Fundamentals, 2012 Edition Chapter 2

  21. The World Wide Web Page 66 Figure 2-9 Discovering Computers Fundamentals, 2012 Edition Chapter 2

  22. The World Wide Web • There are thirteen types of Web sites Pages 67 - 69 Figure 2-11 Discovering Computers Fundamentals, 2012 Edition Chapter 2

  23. The World Wide Web Pages 69 - 70 Figure 2-11 Discovering Computers Fundamentals, 2012 Edition Chapter 2

  24. The World Wide Web • Downloading is the process of a computer receiving information, such as a Web page, from a server on the Internet. • An Advocacy Web Site contains content that describes a cause, opinion, or idea. • A Blog Web Site uses a regularly updated journal format and has an informal style that consists of an individual’s ideas. Discovering Computers Fundamentals, 2012 Edition Chapter 2

  25. Video: Tell Your Stories via Vlog CLICK TO START Discovering Computers Fundamentals, 2012 Edition Chapter 2

  26. The World Wide Web • Information presented on the Web must be evaluated for accuracy • No one oversees the content of Web pages Page 70 Figure 2-12 Discovering Computers Fundamentals, 2012 Edition Chapter 2

  27. The World Wide Web • Multimedia refers to any application that combines text with: Page 70 Discovering Computers Fundamentals, 2012 Edition Chapter 2

  28. The World Wide Web • A graphic is a digital representation of nontext information • Graphic formats include BMP, GIF, JPEG, PNG, and TIFF • GIF and JPEG most common • A thumbnail is a small version of a larger graphic Pages 70 - 71 Figure 2-13 Discovering Computers Fundamentals, 2012 Edition Chapter 2

  29. The World Wide Web • Animation is the appearance of motion created by displaying a series of still images in sequence Page 71 Discovering Computers Fundamentals, 2012 Edition Chapter 2

  30. 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 flow • Video consists of full-motion images that are played back at various speeds • Virtual reality(VR) is the use of computers to simulate a real or imagined environment that appears as a three-dimensional space Pages 72 - 73 Discovering Computers Fundamentals, 2012 Edition Chapter 2

  31. The World Wide Web • Streaming Audio enables users to listen to music as it downloads to their computers. Discovering Computers Fundamentals, 2012 Edition Chapter 2

  32. The World Wide Web Page 72 Figure 2-14 Discovering Computers Fundamentals, 2012 Edition Chapter 2

  33. The World Wide Web • A plug-in is a program that extends the capability of a Web browser Page 73 Figure 2-15 Discovering Computers Fundamentals, 2012 Edition Chapter 2

  34. The World Wide Web • Web publishingis the development and maintenance of Web pages Page 74 Discovering Computers Fundamentals, 2012 Edition Chapter 2

  35. E-Commerce • E-commerce is a business transaction that occurs over an electronic network • Anyone with access to a computer or mobile device, an Internet connection, and a means to pay for purchased goods or services can participate in e-commerce Page 74 Discovering Computers Fundamentals, 2012 Edition Chapter 2

  36. E-Commerce • B2C – the sale of goods and services by a company to the general public • B2B - the sale of goods and services between business • C2C – when one consumer sells directly to another consumer Pages 74 - 75 Discovering Computers Fundamentals, 2012 Edition Chapter 2

  37. E-Commerce Pages 74 - 75 Figure 2-16 Discovering Computers Fundamentals, 2012 Edition Chapter 2

  38. Other Internet Services • The WWW and e-mail are two of the more widely used Internet services. • E-mailis the transmission of messages and files via a computer network • An e-mail programallows you to create, send, receive, forward, store, print, and delete e-mail messages Pages 75 – 76 Figure 2-17 Discovering Computers Fundamentals, 2012 Edition Chapter 2

  39. Other Internet Services Page 77 Figure 2-18 Discovering Computers Fundamentals, 2012 Edition Chapter 2

  40. Other Internet Services Note how the at symbol (@) separates the user name from the domain name in a typical e-mail address. Discovering Computers Fundamentals, 2012 Edition Chapter 2

  41. Other Internet Services • A mailing listis a group of e-mail names and addresses given a single name • Subscribing adds your e-mail name and address • Unsubscribing removes your name Page 78 Discovering Computers Fundamentals, 2012 Edition Chapter 2

  42. Other Internet Services • Instant messaging (IM) is a real-time Internet communications service Page 78 Figure 2-19 Discovering Computers Fundamentals, 2012 Edition Chapter 2

  43. Other Internet Services • A chat is a real-time typed conversation that takes place on a computer • A chat roomis a location on an Internet server that permits users to chat with each other Page 79 Figure 2-20 Discovering Computers Fundamentals, 2012 Edition Chapter 2

  44. Other Internet Services • VoIP (Voice over IP) enables users to speak to other users over the Internet • Also called Internet telephony • FTP (File Transfer Protocol) permits file uploading and downloading Page 80 Figure 2-21 Discovering Computers Fundamentals, 2012 Edition Chapter 2

  45. 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 boardis a Web-based type of discussion group Pages 80 - 81 Figure 2-22 Discovering Computers Fundamentals, 2012 Edition Chapter 2

  46. Netiquette • Netiquette is the code of acceptable Internet behavior Page 81 Figure 2-23 Discovering Computers Fundamentals, 2012 Edition Chapter 2

  47. Summary Page 82 Discovering Computers Fundamentals, 2012 Edition Chapter 2

  48. Chapter 2 Complete

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