Flashcards
SECTION 1: ICT SYSTEMS- 1.2 Hardware Output
Cards in this deck (10)
- 1Monitor2 main types of VDUs (Visual Display units): old style monitors use Cathode- Ray Tube (CRT)
The new-looking flat-screen monitors use Thin Film Transistor (TFT)
Use: viewing work that been typed in
Pro: Instant viewing
Con: may be fixed in one place - 2Dot Matrix PrinterImpact printer- print head has 9 or 24 pins, pins strike paper through a ribbon
Use: multiple printed pages such as invoice
Pro: can print MULTIPLE copies at one time
Con: can be very NOISY - 3Inkjet PrinterDroplets of ink are fired at the paper
Use: printing your school work at home
Pro: cheap and good quality printing
Con: cartridges can be expensive - 4Laser PrinterToner images being fused onto the paper by heat and pressure
Use: printing large quantities of work at one time (offices)
Pro: fast and good quality
Con: can be expensive to buy and run - 5PlotterVector plotters: use pens and draw images using point to point data, moving pen over the paper.
Raster plotters: use electrostatic, thermal or laser
Use: printing large road maps
Pro: good at printing in colour and in detail
Con: can be expensive to buy - 6SpeakersUse: listening to music from the computer
Pro: portable speakers can be carried around
Con: sound can vary depending upon the quality of the speaker - 7Digital ProjectorUse: connected to digital devices and display the devices on-screen content onto a large screen, e.g. viewing movies on a large screen at home
Pro: ENLARGING an otherwise small viewing screen
Con: quality can deteriorate as the screen size is increased - 8Actuators/Robotic ArmsThe moving part of an item such as a robot
Use: using the controls from a computer, the actuator responds accordingly, e.g. raises the robotic arm in a car manufacturing plant- fitting the windscreen wipers
Pro: precision work done with no human errors
Con: once broken can be expensive to repair - 9Lights/buzzersSeen as an indicator, e.g using a security pass card to exit a building. If the reader recognizes the card, the light will give a positive output of flashing green
- 10Computerised MotorsMotors controlled by a computer, e.g. if a computer server room is getting to hot, the computer would automatically instruct the air conditioning motor to turn on, giving an output of cold air
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- Flashcards on SECTION 1: ICT SYSTEMS- 1.2 Hardware Output, created by oconnella000 on 21/04/2014.
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