Output Devices Flashcards
What are output devices?
Output devices are hardware devices used for the outputting/display of data that has been processed.
What is a CRT Monitor? Name it’s advantages and disadvantages.
A CRT (cathode ray tube) Monitor is an output device which are the fatter monitors being used today to display images.
Advantages - can be used with a light pen to edit/produce drawings with a software, can be used where multiple people need to view the screen at the same time
Disadvantages - quite bulky, heavier, flicker which can cause headaches
What is a TFT/LCD Monitor? Name it’s advantages and disadvantages.
A TFT (thin film transistor)/LCD is an output device which are thin/flat screens that are the more modern type of monitor. screen is made up of thousand pixels which have 3 transistors containing the primary colours RGB.
Advantages - very light, thin, use less power than CRT, less radiation
Disadvantages - not easy to repair, narrow viewing angle so image is not as clear from sides
What is a IPS Monitor? Name it’s advantages and disadvantages.
A IPS (in-plane switching) Monitor is an output device which uses LCD (liquid crystal display) to create image.
Advantages - wider viewing angle, much thinner, less glare, more energy efficient than CRT
Disadvantages - not as energy efficient as LED, not good for dimly lit rooms, bad shades of colour
What is a LED Monitor? Name it’s advantages and disadvantages.
A LED Monitor is an output device which uses light emitting diodes to form the image.
Advantages - thinner than CRT, much lighter than CRT, save more energy than CRT or LCD, better picture quality.
Disadvantages - more expensive, visibility is poor if sitting off-centre
What is a printer?
A printer is an output device which which provides output in hard copy (on paper).
What is a inkjet printer? Name it’s advantages and disadvantages.
A Inkjet printer is an output device which work by spraying ink on paper and can produce good B/W photos.
Advantages - relatively smaller than laser, no ozone vapours, high quality print, quietness of operation, cheaper than laser printers
Disadvantages - high cost on ink cartridges, smudges, short-lasting cartridges, slow
What is a laser printer? Name it’s advantages and disadvantages.
A laser printer is an output device which uses a laser beam to print. Used in businesses.
Advantages - quiet, long lasting supplies, high printing speed, no smudge, reliable, cheaper to run, high quality printouts
Disadvantages - more expensive to buy, high power consumption, larger than inkjet
What is a dot matrix printer? Name it’s advantages and disadvantages.
A dot matrix printer is an output device which are impact printers which work by hitting little pins against a inked ribbon to form text.
Advantages - cheaper to run than inkjet, can be used with continuous stationery
Disadvantages - noisy, low quality (dotty text), more expensive to buy than inkjet, not good for printing graphics
What is a multimedia projector? Name it’s advantages and disadvantages.
A multimedia projector is an output device which are used to project images on a computer to a much larger screen.
Advantages - many people can view the projected image, can show video to people sitting far away
Disadvantages - image quality is not as high as on the computer, image will be dim if room is not dark, user needs to know how to use equipment, cooling fans are distracting.
What is a wide format printer? Name it’s advantages and disadvantages.
A wide format printer is an output device which can handle printing on sheets of paper 24inches or wider.
Advantages - can print on large than A4, do not need the services of professional print shops, fast
Disadvantages - expensive if only used occasionally, quite large for small offices
What is a 3D Printer? Name it’s advantages and disadvantages.
A 3D Printer is an output device which can produce 3D digital models offline by using a design software. Is used quite often in medicine
Advantages - can convert designs to prototypes faster than traditional manufacturing, cheaper to use 3D printing than traditional methods (despite printers being expensive), much easier to produce customised products
Disadvantages - limited number of materials can be used for 3d printer, dangerous items can be created, less skilled production
What is a speaker? Name it’s uses, advantages and disadvantages
A speaker is an output device which can output sound signals/play audio.
Uses - music, film, online presentations, video conferencing
Advantages - help disabled people read the text
Disadvantages - sound output may of low quality depending on speaker type
What is a motor?
A motor is an output device which can be controlled by computers using special control signals, to turn them or off.
Can be used in washing machines for rotating the drum or the water valve, open or close windows based on greenhouses, passage of items in a production line of a factory.
What is a buzzer?
A buzzer is a output device which can be used to indicate a control process has been completed or as a warning sign.
Can be used in alarm systems, automatic cooker, and microwave washing machines, as well as driers.
