Output devices

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Output devices

  1. 1. Output Device A device used to display the results. Output device converts data from binary form to human readable form. Output device can display, print or plot the processed data. http://improvec.blogspot.in/ 1
  2. 2. Output devices Monitor or Screen or VDU Printer Plotter Speaker http://improvec.blogspot.in/ 2
  3. 3. Monitor The monitor looks like a TV screen. Monitors available in 14”, 15”, 17” and even 21”. http://improvec.blogspot.in/ 3
  4. 4. Monitors are categorized into CRT Flat –Panel displays http://improvec.blogspot.in/ 4
  5. 5. CRT monitor CRT means Cathode Ray Tube It works with one or more electron guns that systematically aim a beam of electrons at every pixel on the screen. http://improvec.blogspot.in/ 5
  6. 6. Flat-Panel monitor The most commonly used flat-panel monitor is LCD (Liquid Crystal Display). It creates images with a special kind of liquid crystal that is normally transparent but becomes opaque when charged with electricity. http://improvec.blogspot.in/ 6
  7. 7. Monitorhttp://improvec.blogspot.in/ 7
  8. 8. Printer Another important output device is the printer. Types of Printers 1. Impact printers 2. Non-Impact printers http://improvec.blogspot.in/ 8
  9. 9. Impact Printer It creates an image on paper by striking on the inked ribbon, and prints a character. It works like a typewriter, which uses small hammers to strike the ribbon. Example: dot matrix printer. http://improvec.blogspot.in/ 9
  10. 10. Dot matrix printer It is a common type of impact printer. It uses a print head, which contains a cluster of pins. http://improvec.blogspot.in/ 10
  11. 11. Dot matrix printer (contd...) The printer can push the pins out to form patterns in rapid sequence. The pins are used to press an inked ribbon against paper, thus creating an image. http://improvec.blogspot.in/ 11
  12. 12. Dot matrix printer http://improvec.blogspot.in/ 12
  13. 13. Non Impact Printer Non impact use various methods to place ink (or another colored substance) on the page. Example :Ink jet printers use tiny nozzles to spray droplets of ink onto the page. http://improvec.blogspot.in/ 13
  14. 14. Inkjet printer An ink jet printer is an example of non-impact printer. It creates an image by spraying tiny droplets of ink onto the paper. Ink jet printers are inexpensive. http://improvec.blogspot.in/ 14
  15. 15. Inkjet printer http://improvec.blogspot.in/ 15
  16. 16. Laser Printer It is a non-impact and letter quality printer. It produce higher quality print and is fast and convenient to use It is more expensive than ink jet printer. http://improvec.blogspot.in/ 16
  17. 17. Laser Printer (contd) They use heat and pressure to bind tiny particles of toner (a dry ink) to paper. Laser printers are available in both color and black & white. http://improvec.blogspot.in/ 17
  18. 18. Laser Printer (Color) http://improvec.blogspot.in/ 18
  19. 19. Laser Printer http://improvec.blogspot.in/ 19
  20. 20. SummaryIn this class, we have learnt about Functions of input and output devices. Different types of input and output devices. http://improvec.blogspot.in/ 20
  21. 21. Frequently Asked Questions1. Describe the functions of input and output devices?2. List different input and output devices? http://improvec.blogspot.in/ 21
  22. 22. Quiz1. A _____ is just like a type writer. a. key board. b. printer c. Scanner d. PlotterAnswer: a http://improvec.blogspot.in/ 22
  23. 23. Quiz (Contd...)2. A monitor is a. Input device b. Memory device c. Output device d. none of the aboveAnswer: c http://improvec.blogspot.in/ 23
  24. 24. Quiz:3. Scanner is a. input device b. output device c. Memory device d. None of the aboveAnswer: a http://improvec.blogspot.in/ 24
  25. 25. Quiz (Contd...)4. What is used for select and move items on the screen. a. Mouse b. Keyboard c. Light pen d. ScannerAnswer: a http://improvec.blogspot.in/ 25

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