1. © Paradigm Publishing Inc. 3-1 Chapter 3 Output and Storage

2. © Paradigm Publishing Inc. 3-2 Presentation Overview Output Display Devices Printers Audio Output Storage Devices and Media Magnetic Storage Devices and Media Optical Storage Devices Large Computer System Storage Devices

3. © Paradigm Publishing Inc. 3-3 Output Types of Output

4. © Paradigm Publishing Inc. 3-4 Output Types of Output – Text – characters and numbers used to create words, sentences, and paragraphs

5. © Paradigm Publishing Inc. 3-5 Output Types of Output – Text – characters and numbers used to create words, sentences, and paragraphs – Audio – any sound, including speech and music

6. © Paradigm Publishing Inc. 3-6 Output Types of Output – Text – characters and numbers used to create words, sentences, and paragraphs – Audio – any sound, including speech and music – Video – motion images, similar to those seen on a television or movie screen

7. © Paradigm Publishing Inc. 3-7 Output Output Devices and Media

8. © Paradigm Publishing Inc. 3-8 Output Output Devices and Media – Output device – any hardware device that makes information available to a user –monitors, printers, plotters

9. © Paradigm Publishing Inc. 3-9 Output Output Devices and Media – Output device – any hardware device that makes information available to a user –monitors, printers, plotters – Output medium – any medium on which information is recorded –paper, plastic film, magnetic tape

10. © Paradigm Publishing Inc. 3-10 Display Devices Monitor –most common soft-copy output device –consists of a viewing screen and electronic parts that show information on a screen

11. © Paradigm Publishing Inc. 3-11 Display Devices Monitor Resolution –Number of pixels determines quality. –A pixel is a single dot of anything displayed on a screen. –More pixels cause higher resolution and more detailed images.

12. © Paradigm Publishing Inc. 3-12 Display Devices Monitor Performance Determined by –Video card – more VRAM means truer color and faster speed –Resolution – more pixels mean sharper graphics –Refresh rate – faster rate means less screen flicker

13. © Paradigm Publishing Inc. 3-13 Display Devices Monitor Ergonomics Correct positioning when using a monitor can reduce physical fatigue and discomfort.

14. © Paradigm Publishing Inc. 3-14 Display Devices Other display devices

15. © Paradigm Publishing Inc. 3-15 Display Devices Other display devices –Wearable computers – devices such as headsets, eyeglasses, watches, etc., free workers from working in front of a computer

16. © Paradigm Publishing Inc. 3-16 Display Devices Other display devices –Wearable computers – devices such as headsets, eyeglasses, watches, etc., free workers from working in front of a computer –Television displays – HDTV provides a wider screen and higher resolution

17. © Paradigm Publishing Inc. 3-17 Display Devices Other display devices –Wearable computers – devices such as headsets, eyeglasses, watches, etc., free workers from working in front of a computer –Television displays – HDTV provides a wider screen and higher resolution –Screen projector – projects images on a screen to large audiences

18. © Paradigm Publishing Inc. 3-18 Printers What types of printers are available?

19. © Paradigm Publishing Inc. 3-19 Printers What types of printers are available? –Impact printers dot-matrix and line printers

20. © Paradigm Publishing Inc. 3-20 Printers What types of printers are available? –Impact printers dot-matrix and line printers –Nonimpact printers ink-jet printers, laser printers, thermal printers, and plotters

21. © Paradigm Publishing Inc. 3-21 Printers What types of printers are available? – Impact printers dot-matrix and line printers – Nonimpact printers ink-jet printers, laser printers, thermal printers, and plotters – Special-purpose nonimpact printers postage printers, laser printers, and photo printers

22. © Paradigm Publishing Inc. 3-22 Printers What types of printers are available? –Impact printers dot-matrix and line printers –Nonimpact printers ink-jet printers, laser printers, thermal printers, and plotters –Special-purpose nonimpact printers postage printers, laser printers, and photo printers –Multifunction device facsimile machine

23. © Paradigm Publishing Inc. 3-23 Printers Portrait format’s (at left) name comes from the fact that traditional portraits are taller than they are wide. To illustrate a landscape (above), wider images are usually more useful.

24. © Paradigm Publishing Inc. 3-24 Printers Before striking the ribbon, the dot matrix printer extends the correct combination of pins to form a specific character. As with the display of pixels on a monitor, the more pins the printer uses, the sharper the printed letters.

25. © Paradigm Publishing Inc. 3-25 Printers An ink jet printer produces output by spraying tiny ink droplets onto the paper or other medium to form text and images.

26. © Paradigm Publishing Inc. 3-26 Printers A laser printer produces output in a manner similar to that of a copy machine.

27. © Paradigm Publishing Inc. 3-27 Printers Other printers

28. © Paradigm Publishing Inc. 3-28 Printers Other printers –Thermal printers – use heat to transfer an impression onto paper

29. © Paradigm Publishing Inc. 3-29 Printers Other printers –Thermal printers – use heat to transfer an impression onto paper –Plotters – produce large-sized high-quality documents

30. © Paradigm Publishing Inc. 3-30 Printers Other printers –Thermal printers – use heat to transfer an impression onto paper –Plotters – produce large-sized high-quality documents –Photo printers – high-quality ink-jet printers print photos

31. © Paradigm Publishing Inc. 3-31 Printers Other printers –Thermal printers – use heat to transfer an impression onto paper –Plotters – produce large-sized high-quality documents –Photo printers – high-quality ink-jet printers print photos –Label printers – use heat to print on adhesive material

32. © Paradigm Publishing Inc. 3-32 Printers Other printers

33. © Paradigm Publishing Inc. 3-33 Printers Other printers –Postage printers – weigh items, print postage, and meter postage account

34. © Paradigm Publishing Inc. 3-34 Printers Other printers –Postage printers – weigh items, print postage, and meter postage account –Portable printers – battery powered, small, light- weight

35. © Paradigm Publishing Inc. 3-35 Printers Other printers –Postage printers – weigh items, print postage, and meter postage account –Portable printers – battery powered, small, light- weight –Facsimile machines – can send and receive copies of documents through telephone lines

36. © Paradigm Publishing Inc. 3-36 Audio Output –Built-in speakers produce warning sounds.

37. © Paradigm Publishing Inc. 3-37 Audio Output –Built-in speakers produce warning sounds. –Sound cards produce high-quality sound through external speakers for many applications using music, voice, etc.

38. © Paradigm Publishing Inc. 3-38 Audio Output –Built-in speakers produce warning sounds. –Sound cards produce high-quality sound through external speakers for many applications using music, voice, etc. –Speaker headsets position miniature speakers over the ears to minimize sound distraction.

39. © Paradigm Publishing Inc. 3-39 Audio Output –Built-in speakers produce warning sounds. –Sound cards produce high-quality sound through external speakers for many applications using music, voice, etc. –Speaker headsets position miniature speakers over the ears to minimize sound distraction. –Voice output produces synthesized human speech.

40. © Paradigm Publishing Inc. 3-40 Storage Devices and Media Examples of commonly used file extensions

41. © Paradigm Publishing Inc. 3-41 Storage Devices and Media More examples of commonly used file extensions

42. © Paradigm Publishing Inc. 3-42 Storage Devices and Media A storage device is hardware that houses a storage medium on which data is recorded.

43. © Paradigm Publishing Inc. 3-43 Storage Devices and Media A storage device is hardware that houses a storage medium on which data is recorded. Magnetic devices –floppy disk –hard disk –tape cartridge –USB flash drive

44. © Paradigm Publishing Inc. 3-44 Storage Devices and Media A storage device is hardware that houses a storage medium on which data is recorded. Magnetic devices Optical devices –floppy disk– compact disc (CD) –hard disk– digital versatile –tape cartridge disc (DVD) –USB flash drive

45. © Paradigm Publishing Inc. 3-45 Magnetic Storage Devices and Media Floppy Disk –a thin, circular Mylar ® wafer sandwiched between two sheets of special cleaning tissue inside a plastic case –stores data along the tracks and sectors on the floppy disk

46. © Paradigm Publishing Inc. 3-46 Magnetic Storage Devices and Media Floppy disk handling and storage guidelines

47. © Paradigm Publishing Inc. 3-47 Magnetic Storage Devices and Media The process of formatting a floppy disk results in the disk being arranged into tracks and sectors. Data is stored in sectors along the tracks.

48. © Paradigm Publishing Inc. 3-48 Magnetic Storage Devices and Media A hard drive contains one or more hard disks on which data is stored. When activated, read/write heads move in and out between the disks to record and/or read data.

49. © Paradigm Publishing Inc. 3-49 Magnetic Storage Devices and Media USB Flash Drive –a magnetic storage device that plugs into a USB port of a computer –about the size of a car key, can store up to several gigabytes of data

50. © Paradigm Publishing Inc. 3-50 Magnetic Storage Devices and Media Tape Cartridges and Tape Drives –magnetically coated tape in a small plastic housing –used mainly for backing up the contents of a hard drive

51. © Paradigm Publishing Inc. 3-51 Optical Storage Devices The CD is loaded printed side up, and the holes in the tray allow the laser to read the bottom surface of the disc once the tray is closed.

52. © Paradigm Publishing Inc. 3-52 Optical Storage Devices How do optical devices store data?

53. © Paradigm Publishing Inc. 3-53 Optical Storage Devices How do optical devices store data? –High-intensity laser records data by burning indentions (pits) onto disc surface.

54. © Paradigm Publishing Inc. 3-54 Optical Storage Devices How do optical devices store data? –High-intensity laser records data by burning indentions (pits) onto disc surface. –Flat, unburned areas on disc are called lands.

55. © Paradigm Publishing Inc. 3-55 Optical Storage Devices How do optical devices store data? –High-intensity laser records data by burning indentions (pits) onto disc surface. –Flat, unburned areas on disc are called lands. –Two low-intensity lasers read and write each bit as a digit 0 and each land as a digit 1.

56. © Paradigm Publishing Inc. 3-56 Optical Storage Devices An optical disc drive reads binary data stored on an optical disc.

57. © Paradigm Publishing Inc. 3-57 Optical Storage Devices Information is stored on a series of sectors along a single track that spirals outward from the center to the outer edge of the optical disc.

58. © Paradigm Publishing Inc. 3-58 Optical Storage Devices Types and storage capacities of optical discs

59. © Paradigm Publishing Inc. 3-59 Optical Storage Devices (CD-R) Compact Disc, Recordable –allows PC to record (burn) information on a CD-R disc –writes once to disc, and resulting CD can be read in a standard CD-ROM drive –can hold 650-700 MB of information

60. © Paradigm Publishing Inc. 3-60 Optical Storage Devices (CD-RW) Compact Disc, Rewritable

61. © Paradigm Publishing Inc. 3-61 Optical Storage Devices (CD-RW) Compact Disc, Rewritable –can be erased and rewritten multiple times

62. © Paradigm Publishing Inc. 3-62 Optical Storage Devices (CD-RW) Compact Disc, Rewritable –can be erased and rewritten multiple times –CD-RW drive and special software required

63. © Paradigm Publishing Inc. 3-63 Optical Storage Devices (CD-RW) Compact Disc, Rewritable –can be erased and rewritten multiple times –CD-RW drive and special software required –can hold 650-700 MB of information

64. © Paradigm Publishing Inc. 3-64 Optical Storage Devices DVD-R Discs (Digital Versatile Disc, Recordable)

65. © Paradigm Publishing Inc. 3-65 Optical Storage Devices DVD-R Discs (Digital Versatile Disc, Recordable) –can be recorded on only one time

66. © Paradigm Publishing Inc. 3-66 Optical Storage Devices DVD-R Discs (Digital Versatile Disc, Recordable) –can be recorded on only one time –can be read by most commercial DVD-ROM players

67. © Paradigm Publishing Inc. 3-67 Optical Storage Devices DVD-R Discs (Digital Versatile Disc, Recordable) –can be recorded on only one time –can be read by most commercial DVD-ROM players –can hold up to 4.7 GB of data

68. © Paradigm Publishing Inc. 3-68 Optical Storage Devices DVD-R Discs (Digital Versatile Disc, Recordable) –can be recorded on only one time –can be read by most commercial DVD-ROM players –can hold up to 4.7 GB of data –new format called Blu-ray can store 27 GB of data

69. © Paradigm Publishing Inc. 3-69 Optical Storage Devices DVD-RW Discs (Digital Versatile Disc, Rewritable)

70. © Paradigm Publishing Inc. 3-70 Optical Storage Devices DVD-RW Discs (Digital Versatile Disc, Rewritable) –allows data to be erased and recorded over many times without damaging disc

71. © Paradigm Publishing Inc. 3-71 Optical Storage Devices DVD-RW Discs (Digital Versatile Disc, Rewritable) –allows data to be erased and recorded over many times without damaging disc –can store up to 4.7 GB of data

72. © Paradigm Publishing Inc. 3-72 Optical Storage Devices DVD-RW Discs (Digital Versatile Disc, Rewritable) –allows data to be erased and recorded over many times without damaging disc –can store up to 4.7 GB of data –can be read by most commercial CD-ROM players

73. © Paradigm Publishing Inc. 3-73 Optical Storage Devices Care instructions for optical discs

74. © Paradigm Publishing Inc. 3-74 Optical Storage Devices Steps for cleaning an optical disc

75. © Paradigm Publishing Inc. 3-75 Large Computer System Storage Devices Magnetic Disk Storage –Disk drive houses many hard disks in a plastic container. –Read/write heads record information and store data by moving among disks.

76. © Paradigm Publishing Inc. 3-76 Large Computer System Storage Devices Magnetic Tape Storage –removable reels of magnetic tape –data is stored and accessed sequentially along full length of tape –used primarily for backup and storage of data

77. © Paradigm Publishing Inc. 3-77 Large Computer System Storage Devices WORM (write once, read many) disk

78. © Paradigm Publishing Inc. 3-78 Large Computer System Storage Devices WORM (write once, read many) disk –used for very high capacity storage

79. © Paradigm Publishing Inc. 3-79 Large Computer System Storage Devices WORM (write once, read many) disk –used for very high capacity storage –mainly found in mainframe applications

80. © Paradigm Publishing Inc. 3-80 Large Computer System Storage Devices WORM (write once, read many) disk –used for very high capacity storage –mainly found in mainframe applications –ideal for storing archival-type material

81. © Paradigm Publishing Inc. 3-81 Large Computer System Storage Devices WORM (write once, read many) disk –used for very high capacity storage –mainly found in mainframe applications –ideal for storing archival-type material –usually readable only on drive on which data were written

82. © Paradigm Publishing Inc. 3-82 On the Horizon Based on the information presented in this chapter and your own experience, what do you think is on the horizon?