Tia7e ch08 ppt

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Tia7e ch08 ppt

  1. 1. Copyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall 1
  2. 2. Technology in Action Chapter 8 Digital Lifestyle: Managing Digital Data and DevicesCopyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall 2
  3. 3. Chapter Topics• Changes that have brought us a digital lifestyle• The impact of a digital lifestyle• Cell phones and smartphones• Voice over Internet ProtocolCopyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall 3
  4. 4. Chapter Topics• Digital media versus analog media• Portable media players• How to create and watch digital video• Ubiquitous computingCopyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall 4
  5. 5. Digital Lifestyle: What Are the Advantages of a Digital Format? • Sounds and images reproduce perfectly • Easy distribution • Small devices can hold huge collections of media • Easy access to digital informationCopyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall 5
  6. 6. Cellular Phones and Smartphones• Features include – Auto-redial – Voice mail – Voice-activated dialing – Internet access – Text messaging – Personal information management (PIM)• The most full-featured cell phones are categorized as smartphonesCopyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall 6
  7. 7. How Cell/Smartphones Work• Analog-to-digital converter chip converts voice sound waves into digital signals.• Digital signal processor compresses the signal so it can be sent to another phone.• Digital data is transmitted as radio waves.• Digital signal processor decompresses incoming calls.Copyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall 7
  8. 8. How Cell/Smartphones Work• Base transceiver station – Picks up the request for service• Mobile switching center – Monitors the strength of the signal – When signal is weak, orders the next base station to take charge of your call.Copyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall 8
  9. 9. Cell/Smartphone Hardware • Processor (CPU) – Coordinates sending data between components – Runs the operating system – Popular processors include • Samsung SC • Texas Instruments OMAP • Marvell Xscale • Apple A4Copyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall 9
  10. 10. Cell/Smartphone Operating Systems • Translate the user’s commands into instructions for the processor – Symbian – Windows Mobile – OS X – Android – OpenMoko • A free open-source mobile operating systemCopyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall 10
  11. 11. Cell/Smartphone Memory and Storage• ROM stores the operating system and the basic programs.• Separate internal memory chips store additional applications and data.• Flash cards are used for additional storage.Copyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall 11
  12. 12. Cell/Smartphone Hardware• Input devices – Microphone – Keypad – Graffiti pad – Touch screen – Digital camera• Output devices – Speaker – LCD displayCopyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall 12
  13. 13. Cell/Smartphone Software• Standard software – To-do list – Contacts manager – Calendar• Additional software – Microsoft Word, Excel, Outlook, and PowerPoint – Games – Tools – ReferencesCopyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall 13
  14. 14. Cell/Smartphone File Transfer and Synchronization• Cell/smartphone files can be transferred to a desktop – Flash card readers – Cradles• Synchronizing updates files on the cell/smartphone and desktop – Sync cables – Windows Sync Center• Wireless transfers – IrDA – BluetoothCopyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall 14
  15. 15. Cell/Smartphone Text Messaging• Text messaging – Short Message Service (SMS) • Sends messages of up to 160 characters – Multimedia Message Service (MMS) • Sends text, sound, images, and video clipsCopyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall 15
  16. 16. Cell/Smartphone Internet Connectivity• Wireless Internet service provider• Internet connectivity plans, usually known as data plans• Microbrowser software• Pages are written in Wireless Markup Language (WML)Copyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall 16
  17. 17. Cell/Smartphone Internet Connectivity• 3G and Enhanced Data Rate for Global Evolution (EDGE) – Allow connectivity speeds of up to 1.7 Mbps – Conditions must be ideal to get this transfer rate – More reliable and less susceptible to interference than WiFi• 4G – Connection speeds of up to 50 MbpsCopyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall 17
  18. 18. Voice Over Internet Protocol (VoIP)• A standard Internet connection can be used to make a phone call• Basic requirements for VoIP include: – Speakers – Microphone – Internet connection – VoIP provider• Allows free or low cost long distanceCopyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall 18
  19. 19. Cell/Smartphone Security• Viruses can target cell phones.• Antivirus software for mobile devices – Symantec – McAfee – F-SecureCopyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall 19
  20. 20. Portable Media Players (PMPs)• Small devices that store and play music• Many also handle video and still images• Many formats for storing files– MP3, AAC, and WMA for music– DivX, MPEG-4, WMV and XviD for video• How much music/video can be stored depends on the PMP’s storage spaceCopyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall 20
  21. 21. Other Choices for Portable Media Management• Some digital camera models• Sony Playstation Portable• Global positioning systems (GPS)• TabletCopyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall 21
  22. 22. PMP Flash Memory• Flash cards can add memory to portable media players – Nonvolatile – Noiseless – Use very little power – Hold between 64 MB and 64 GB of dataCopyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall 22
  23. 23. Legal Music Downloads• Tethered downloads – You pay for the music and you own it – You are subjected to restrictions on its use• DRM-free downloads – No digital rights management on the files – Song files can be moved from system to system and shared among usersCopyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall 23
  24. 24. Legal Music Downloads• Subscription services – Unlimited downloads to your PMP – Songs usable only as long as you pay your monthly subscription feeCopyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall 24
  25. 25. Podcasting• Competes with radio and television• Podcasts can be information, radio or TV shows, books on tape, audio plays, etc.• People can listen when they wish.• Can use podcasting software to automatically transfer new content.Copyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall 25
  26. 26. Digital Photography • Does not use film • See your images instantly • Better than cell phone cameras – Digital cameras have a higher image resolution • Most common file format is JPEGCopyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall 26
  27. 27. Digital Video • Digital video can be captured using – Digital video cameras – Cell/smartphones – Webcams • Digital video software allows you to – Edit digital video – Review clips frame by frame – Reorder segments – Correct color, balance, brightness, orCopyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall 27
  28. 28. Digital Video Files• Common file formats – QuickTime – MPEG – RealMedia – AVI• Consider codecs when choosing file formats – Rules that squeeze audio and video information into less spaceCopyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall 28
  29. 29. Getting Your Video Out to Viewers• Transfer your video from digital device to computer – USB – Special sync cable• Special devices can transfer video directly to YouTube• Choose method of distribution – YouTube – DVD – WebcastCopyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall 29
  30. 30. Access to Digital Assets• Netbooks – Run fully featured OSs – Weigh less than two pounds• Internet tablets – Lightweight, very portable – No keyboard• Notebook computers – All capabilities of a desktop – May weigh more than other twoCopyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall 30
  31. 31. Other Devices to Consider• Sony PlayStation Portable – Internet access – Stores data files, videos, music, and images• Amazon Kindle, Nook, Sony – Stores up to 3,500 e-books Amazon KindleCopyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall 31
  32. 32. Ubiquitous Computing• Computing that is inseparable from our everyday lifestyleCopyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall 32

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