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Chapter 3

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Chapter 3

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  1. Chapter 3 Output and Storage

  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. Types of Output Output

  4. Types of Output Text– characters and numbers used to create words, sentences, and paragraphs Output

  5. Types of Output Text – characters and numbers used to create words, sentences, and paragraphs Audio – any sound, including speech and music Output

  6. 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 Output

  7. Output Devices and Media Output

  8. Output Devices and Media Output device–any hardware device that makes information available to a user monitors, printers, plotters Output

  9. 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 Output

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

  11. Monitor Resolution Number of pixels determines quality. Apixelis a single dot of anything displayed on a screen. More pixels cause higher resolution and more detailed images. Display Devices

  12. 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 Display Devices

  13. Monitor Ergonomics Correct positioning when using a monitor can reduce physical fatigue and discomfort. Display Devices

  14. Display Devices Other display devices

  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. 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. 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. What types of printers are available? Printers

  19. What types of printers are available? Impact printers • dot-matrix and line printers Printers

  20. What types of printers are available? Impact printers • dot-matrix and line printers Nonimpact printers • ink-jet printers, laser printers, thermal printers, and plotters Printers

  21. 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 Printers

  22. 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 Printers

  23. 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. Printers

  24. 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. Printers

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

  26. A laser printer produces output in a manner similar to that of a copy machine. Printers

  27. Other printers Printers

  28. Other printers Thermal printers – use heat to transfer an impression onto paper Printers

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

  30. 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 Printers

  31. 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 Printers

  32. Printers Other printers

  33. Printers Other printers • Postage printers – weigh items, print postage, and meter postage account

  34. Printers Other printers • Postage printers – weigh items, print postage, and meter postage account • Portable printers – battery powered, small, light-weight

  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. Audio Output • Built-in speakers produce warning sounds.

  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. 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. 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 outputproduces synthesized human speech.

  40. Storage Devices and Media Examples of commonly used file extensions

  41. Storage Devices and Media More examples of commonly used file extensions

  42. Storage Devices and Media • A storage device is hardware that houses a storage medium on which data is recorded.

  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. 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. 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 Magnetic Storage Devices and Media

  46. Floppy disk handling and storage guidelines Magnetic Storage Devices and Media

  47. 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. Magnetic Storage Devices and Media

  48. 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. Magnetic Storage Devices and Media

  49. 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 Magnetic Storage Devices and Media

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