Dct chapter 2

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Dct chapter 2

  1. 1. Communicating with Digital Technology2 Chapter Contents pg. 35-57 Lesson 2.1 Digital Image Technology (pg. 37) Lesson 2.2 Communicating Online (pg. 40) Lesson 2.3 Internet Security and Acceptable Use (pg. 47) Lesson 2.4 Ethics and Netiquette (pg. 50) Chapter Assessment Copyright © by The McGraw-Hill Companies, Inc. All rights reserved. Glencoe Digital Communication Tools
  2. 2. Communicating with Digital Technology2 You Will Learn To  Describe the uses of digital cameras and camcorders  Explore different webcams on the Internet  Describe weblogs and begin planning your own  Explain the uses of e-mail  Describe an acceptable use policy  Identify security risks of computer use  Explain ethical uses of technology and netiquette  Define ethics and netiquette Glencoe Digital Communication Tools
  3. 3. Communicating with Digital Technology 2 2.1 Digital Image Technology pg. 37-39 Digital Camerasresolution You can use a digital camera to:The amount of detail in  Take as many photos as you wanta digital image,measured in pixels.  Instantly delete those you do not likepixel  Connect directly to your computer to edit, print, andA single point in a e-mail your photosdigital image. Resolution A digital camera’s picture quality can be measured by its resolution, or number of pixels.Digital pictures usuallyhave a file extensionof .jpg or .jpeg,pronounced“dot jay-peg.” Glencoe Digital Communication Tools
  4. 4. Communicating with Digital Technology2 2.1 Digital Image Technology pg. 37-39 Digital Camcorders A digital camera records media clips and movies, allowing you to:  Create movies  Edit a video and add special effects with your computer DVD Recorders A DVD recorder’s many uses include the ability to:  Record and save television shows  Copy home movies from VHS tapes  Play music CDs  Store digital pictures Glencoe Digital Communication Tools
  5. 5. Communicating with Digital Technology 2 2.1 Digital Image Technology pg. 37-39 What can you do with a digital camera that is not possible with a regular camera?digicom.glencoe.comLesson 2.1, Rubric Glencoe Digital Communication Tools
  6. 6. Communicating with Digital Technology 2 2.2 Communicating Online pg. 40-46 The Weblog Revolutionweblog A weblog can be created by anyone to:An online journal that is  Share opinions and informationupdated almost everyday by its author.  Keep in touch with a circle of online friends  Allow reading access to thousands of online readers E-Mail With electronic mail (e-mail), you can:  Communicate quickly with people all over the world  Send a message to either one person or a group  Attach files such as newsletters, digital photos, or a spreadsheet budget Glencoe Digital Communication Tools
  7. 7. Communicating with Digital Technology2 2.2 Communicating Online pg. 40-46 Listservs E-mail’s flexibility allows anyone to join a listserv. A listserv is a large e-mail group formed by people who share a common interest. Glencoe Digital Communication Tools
  8. 8. Communicating with Digital Technology 2 2.2 Communicating Online pg. 40-46 WebcamswebcamA small camera that You can use a webcam for many purposes, including:connects to a computer  One-on-one video chatsand sends an imageover the Web.  Educational purposes  Entertainment Some webcam sites include:  Alamo Cam  Bonaire Reef Cam  Fall Foliage Cams  Mount St. Helens Volcano Cam  Philadelphia International Airport Glencoe Digital Communication Tools
  9. 9. Communicating with Digital Technology 2 2.2 Communicating Online pg. 40-46  How has the Internet changed the way we communicate?  What is the purpose of a weblog?  Give uses for a webcam.digicom.glencoe.comLesson 2.2, Rubric Glencoe Digital Communication Tools
  10. 10. Communicating with Digital Technology2 2.3 Internet Security and Acceptable Use pg. 47-49 Security Risks Both individuals and businesses can suffer from unauthorized access problems on the Internet which can lead to:  Stolen information  Damaged files, hard drives, or Web sites Denial of Service In a denial of service attack, someone uses computer tricks to overload and shut down a company’s Web site. Glencoe Digital Communication Tools
  11. 11. Communicating with Digital Technology2 2.3 Internet Security and Acceptable Use pg. 47-49 The Culprits Two of the worst culprits of security risks are:  Crackers steal information or maliciously break down copyrighted software’s security protection  Hackers gain unauthorized access to computer systems, often to steal usernames or passwords Glencoe Digital Communication Tools
  12. 12. Communicating with Digital Technology 2 2.3 Internet Security and Acceptable Use pg. 47-49 Firewall Protectionfirewall Many people use a firewall to guard against hackers,A software program spyware, and other security risks.that acts as a barrierbetween a computerand the Internet to Acceptable Useprotect the computer Businesses and schools often require anyone using theirfrom unauthorized computer systems to sign an acceptable use policy (AUP).access. An AUP:  Contains rules for using an organization’s Internet and computer network  Prohibits unethical or illegal purposes Glencoe Digital Communication Tools
  13. 13. Communicating with Digital Technology 2 2.3 Internet Security and Acceptable Use pg. 47-49  Do you think schools and businesses have the right to make people sign an AUP?  Do they have the right to take away computer privileges from someone who violates the AUP?  Explain your answer.digicom.glencoe.comLesson 2.3, Rubric Glencoe Digital Communication Tools
  14. 14. Communicating with Digital Technology 2 2.4 Ethics and Netiquette pg. 50-54 The Importance of Ethicsethics Ethics should be practiced both on and offline by:Society’s rules for  Respecting the privacy of personal informationwhat is right andwhat is wrong.  Using courtesy in online discussion forumsnetiquette  Not accepting illegal copies of softwareThe manners peopleuse in electroniccommunications. Netiquette Online misunderstandings and errors in netiquette can often be prevented by avoiding common tactics such as:  Flaming, or using obscene or angry language  Typing in all capital letters, which comes across as shouting online Glencoe Digital Communication Tools
  15. 15. Communicating with Digital Technology 2 2.4 Ethics and Netiquette pg. 50-54 A friend tells you about a Web site that lets you download research papers. All you need to do is put your name on it and pretend you wrote it. Is this ethical? Explain your answer.digicom.glencoe.comLesson 2.4, Rubric Glencoe Digital Communication Tools
  16. 16. Communicating with Digital Technology 2 DIGITAL CAREER PERSPECTIVE pg. 54 Keeping People MovingName:Javier Lopez Javier Lopez is a maintenance specialist who keeps a major transportation organization’s vehicles running safelyJob Title:Light Rail Train and efficiently.Maintenance Specialist In his job, Javier uses a PDA (personal digital assistant)Career Cluster: and walkie-talkie mobile phone to:Transportation,Distribution, and  Order new partsLogistics  Communicate with co-workers  Quickly reach someone during urgent situations  Purchase technical and specialized equipment without the burden of unnecessary paperwork Glencoe Digital Communication Tools
  17. 17. Communicating with Digital Technology2 DIGITAL CAREER PERSPECTIVE pg. 54 Keeping People Moving Javier says, “I work in this industry because I’ve always enjoyed watching trains. I also love the challenge of mechanical projects, and this career keeps me well- equipped to meet those challenges.” Glencoe Digital Communication Tools
  18. 18. Communicating with Digital Technology2 DIGITAL CAREER PERSPECTIVE pg. 54 Question How do modern advances in technology help someone in Javier’s position? Possible answers include:  Allow faster and easier communication with customers and co-workers  Remove some time-consuming paperwork, allowing more time to be spent on the work itself  Speed up the production and delivery of new parts and equipment  Provide easier and quicker access to help during emergencies and urgent situations Glencoe Digital Communication Tools
  19. 19. Communicating with Digital Technology2 Chapter Assessment Question 1 What is resolution, and how is it measured? (Lesson 2.1) Answer: Resolution is the amount of detail in a digital image. Resolution is measured in pixels. More pixels mean better resolution, which means better picture quality. Glencoe Digital Communication Tools
  20. 20. Communicating with Digital Technology2 Chapter Assessment Question 2 Give examples of two types of Internet security risks. (Lesson 2.3) Possible Answers include:  Unauthorized access, including that of hackers, crackers, and spyware  Denial of service (DoS) attacks Glencoe Digital Communication Tools
  21. 21. Communicating with Digital Technology2 Chapter Assessment Question 3 What trends do you see happening in communicating online for both home and business users? Answers may include currently popular trends of using:  E-mail  Instant messaging  Discussion lists  Online chats  Video conferencing Glencoe Digital Communication Tools
  22. 22. Communicating with Digital Technology2 Chapter Assessment Answer 3 Another trend is the use of the wireless technology of:  PDAs  Cell phones  Other handheld devices for text messaging, video conferencing, and accessing e-mail and the Internet Glencoe Digital Communication Tools
  23. 23. Impact of Digital Communication Tools12 Unit Resources For more resources on this unit, go to the Online Learning Center at http://www.digicom.glencoe.com. Glencoe Digital Communication Tools

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