Output Devices

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  • Created by: tsts2208
  • Created on: 28-08-15 12:07

VDU or Monitor

uses:
-use for computer projecting inside the monitor
-display eveything in pixels

advantages:
-to be able to see what the computer is processing

disadvantages:
-the displays could be distracting from other activities
-takes up space if more than one monitors are used

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Dot Matrix Printer

uses:
-the characters are form from matrix of dots
-oldest type of printer

advantages:
-cheap
-can make carbon copies
-they tolerate hot and dirty environment

disadvantaes:
-noisy
-the printing is not high resolution

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Daisywheel Printer

uses:
-it is molded characters 
-print by hammer and print ribbon

advantages:
-the final print looks high quality

disadvantages:
-noisy
-slow process of printing

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Thermal Printer

uses:
-formed by heated elements and heat sensitive paper, forms dots
-widely use in battery powered equipments

advantages:
-cheap
-print well in black and white

disadvantages:
-doesn't print in colour
-paper tends to darken from exposure from sunlight and heat
-formed by 

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Laser printer

uses:
-use laser beam and dry powdered ink
-could generate 4 A4 papers in 1 minute

advantages:
-the print quality is good
-fast printing

disadvantages:
-takes up a lot of space
-expensive

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Ink Jet Printer

uses:
-the printing head produces high resolution matrix dots
-could print colour

advantages:
-cheap colour printing
-lowest cost of modern printers

disadvantages:
-refill colour catridges could cost a lot
-have to wait for ink to dry on paper after printing process

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Machine Tool

    

uses:
-to manufacture variety of products
-controlled by sets of computer instructions
-high accuracy in producing products

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Flatbed Plotter

uses:
-when paper is fixed flat, the plotter will draw on it

advantages:
-could multiple kinds or colours to draw on the paper

disadvanttages:
-the paper could not be crumbled or folded
-takes up space

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Electrostatic Plotter

uses:
-creates raster images by charging the paper with high voltage

advantages:
-fast process

disadvantages:
-poor quality printing
-takes up space 

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Drum Plotter

uses:
-pen moving in single axis track

advantage:
-can print text and images in the same time
-prints fast on some drum plotters

disadvantage:
-the size of the graph is limited
-slow printing process

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Speakers

uses:
-it spreads sound
-could use for increasing volume

advantage:
-the volume could be manage from the the speakers itself, on some speakers

disadvantages:
-sound speakers are very heavy and takes up space
-the sound quality could lower if magnetic feilds damage the magnets in the speakers

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