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Output devices

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presentation on output devices with photos.

presentation on output devices with photos.

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  • 1. Presented by:- Yogiraj
  • 2. List of Output Devices  Visual Display Unit  Printers  Plotters  Speakers
  • 3. Output Devices  Devices that display, print, or transmit the results of processing from the computer’s memory.  Before an output can be produced by a computer it must have an output device connect to it.
  • 4. Visual Display Unit (VDU)  A visual display unit (VDU) or Monitors are the most popular devices used for producing soft-copy output.  Monitors can display graphics, text and video. The size of the monitor is measured in inches diagonally across the screen; 15, 17, 19 and 21 inch monitors are the most common sizes. A color monitor can display from 16 to over 1 million different colors.
  • 5. Visual Display Unit (VDU)
  • 6. Printers  A printer is an output device that produces a printout or hard copy of the output from a computer. There are many types of printers are available.  The speed of printer can be measured in characters per second (CPS) or pages per minute (PPM), the higher the values are, the faster the printer can produce output.
  • 7. Types of printers  Impact Printer: An impact printer forms characters and graphics on a piece of paper by striking a mechanism contacts the paper.  Non-Impact Printers: A non-impact printer forms character and graphics on a piece of paper without actually striking the paper.
  • 8. Types of printer  Daisy Wheel Printer  Dot-Matrix Printer  Line Printer  Ink-Jet Printer  Laser Printer  Plotters
  • 9. Dot Matrix Printer  A dot matrix printer forms characters and graphics on the paper by producing pattern of dots.  Dot matrix printers are relatively cheap and so is the stationary they use.  Dot matrix printers are generally noisy.
  • 10.  Slow, with speed usually ranging between 30 to 600 characters per second.
  • 11. Inkjet Printer  This is a non-impact printer that forms characters and graphics by spraying tiny drops of liquid ink onto a piece of paper.  Inkjet Printers are very quite to operate and can produce good quality printouts of both graphics and text.  Inkjet Printers are generally quite.
  • 12.  Inkjet Printers can produce high quality color output.
  • 13. Daisy wheel Printer  A Daisy Wheel printer is an impact printer that uses a wheel as a print head. As the Wheel rotates, a hammer strikes the backside of the spoke and presses it against the paper to print a character.  Can print letter quality characters.
  • 14.  Printing speed is very slow.
  • 15. Laser Printer  The mechanism of haw a laser printer works is similar to a photocopier. Laser printers are also known as page printers because they process and store the entire page before they actually print it.  Laser printers can be print text at speeds of 4 to over 30 pages per minute.
  • 16.  The cost per page of toner cartridges is lower than other printers.  Laser printers are quite and fast.
  • 17. Plotters  A plotter is large printer that generates high-quality documents by moving ink panes over the surface of paper.  Plotters are particularly useful to engineers and architects, as they produce high quality blueprints, maps, and floor plans.  Can print on large printers
  • 18.  High quality printing  Plotters are expensive
  • 19. Speakers A speaker, or speaker system converts an electrical signal to sound The term loudspeaker can refer to individual transducers (known as drivers), or to complete systems consisting of a enclosures incorporating one or more drivers and electrical filter components.
  • 20.  Loudspeakers are the most variable elements in an audio system and are responsible for the greatest degree of audible difference between sound system.

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