“An output device is any hardware used to communicate processed data to the user, e.g. Monitor, speakers and printers.”

 One of the most popular output devices  Inkjet printers  Laser printers  Graph plotters  Dot matrix printers  Thermal printers  Braille printers

 Popular for domestic use  Small jets of ink sprayed on to paper  Three systems used for printing  Nozzles controlled by crystals which change shape  Ink heated and pushed through nozzles (bubblejet)  Continuous flow – ink squirts continuously from nozzles

 The most versatile – but are more expensive  Pages are set up in full before printing  They have four main parts:  Rotating drum – has an electrical charge  Laser – etches a negative electrically charged image onto the drum  Toner cartridge – drum attracts ink from toner cartridge to areas that are charged  Fuser unit – heats the paper, to make ink stick

 Often used with CAD  An arm moves over the paper, spraying ink  Designed to handle large sheets of paper  Output – high quality vector graphics  Good for architectural drawings

 Used a lot in the past – receipts  Print a series of dots that form characters  Useful if carbon copies are needed as they are impact printers

 Often used in calculators and fax machines  Marks transferred to paper, using heat

 Also known as embossers  Create sequences of raised dots on the paper

 Also known as VDUs (Visual Display Units)  Two main types :  CRT (Cathode Ray Tube)  Flatscreen – LCD – TFT - Plasma

 This presentation is being output by a LCD projector.  Also known as beamers

 Add another dimension  Integral part of any multimedia system  Can be used as primary output – speech output for the visually impaired