1.6 - Output Devices Flashcards
1
Q
Describe a TFT monitor
A
- much smaller than CRT
- use liquid crystals to form the image
2
Q
Describe digital projectors
A
-larger versions of the monitor output for a larger number of people
3
Q
Describe interactive whiteboards
A
- touch-screen sensitive surface so people can use a stylus to interact with it
- they are input and output devices
4
Q
Describe plasma screens
A
- often uses as TV’s but also as computer monitors
- they work by illuminating tiny fluorescent lights to make the image
5
Q
Describe mobile phone screens
A
Output (viewing the options available to you)
6
Q
Describe PDA’s (personal digital assistant)
A
- larger screens than mobiles
- can run application software on them
7
Q
Describe laser printers
A
- popular in offices where colour is not needed
- cheap
- can print high quality documents quickly
8
Q
Describe inkjet printers
A
- cheaper than lasers
- expensive to run
- slower than lasers
- can print in colour
9
Q
Describe multi-function printers
A
- includes built in scanner so can be used as a photocopier
- suitable for home&office use
- use inkjet technology
10
Q
Describe dot-matrix printers
A
- very cheap
- black and white
- poor quality
- used where large volume of prints are needed and quality isn’t
11
Q
Describe plotters
A
- draw detailed and accurate images
- used to print graphical and technical drawings
- cannot produce full sized colour graphics
12
Q
Describe external speakers
A
- plugged into computer and play sounds produced by sound card
- vary in appearance and quality
13
Q
Describe built-in speakers
A
- have limited volume and low quality sound
- built into computers for general purpose
14
Q
Describe headphones
A
- useful for public situations
- attached to a device by cable
- good for call centres where nouse needs to be kept to a minimum
15
Q
Describe wireless headphones
A
- can be used with a phone so user can use phone while driving
- uses Bluetooth technology to eliminate need for cables
