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Page 6 Questionnaire
This quiz is about different types of monitors this quiz can determine how well you know about monitors
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VDU
What does VDU stand for?
vital display unit
visual display unit
visual digital unit
video digital utility
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Pixels
What are pixels?
A type of food
A fairy tale reindeer thing
A group of dots
A game
A measurement of brightness
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LCD
How do LCD's work?
when the crystals are charged the light passes through them, used with special filters.
The crystal is lit by a dim light behind the screen, which then the crystals enhance the light.
Small Phosphor dots are arranged in groups of three, and when hit by a beam of electrons it glows.
The crystals magically light up showing the picture.
the crystals act like the printers there is a paper behind the screen and the computer prints every screen and shows it to you in a frame.
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TFT
Tick two advantages of Thin film transistor TFT screens?
Take up little space
High quality
They are very fast
They are much lighter than normal screens
It is very high tech and is very easy to use
CRT
How do Cathode ray tube (CRT) work?
when the ray tube are charged the light passes through them, used with special filters.
The crystal is lit by a dim light behind the screen, which then the crystals enhance the light.
Small Phosphor dots are arranged in groups of three, and when hit by a beam of electrons it glows.
The screen magically light up showing the picture.
the Phospher dots act like the printers there is a paper behind the screen and the computer prints every screen and shows it to you in a frame.
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Phosphor dots arrangement
Phospher dots are arranged in which groups of three?
red, green, black
red, grey, brown
red, green, blue
red, grey, blue
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Projectors
What are the four key features projectors?
Brightness, Bulb speed, remote, height
Orientation, Blub life, Mounting, height
Brightness, Blub life, Mounting, Remote
Orientation, Blub speed, remote, Mounting
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Brightness
What is brightness measured in?
Watts
Metres
lumens
Joules
brightens
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Bulb life
What is the average bulb life of a projector bulb
2000 hours
2 minutes
200 minutes
200 hours
20 hours
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Interactive Whiteboards
what are two advantages of interactive whiteboards?
Lessons can be recorded and played back
Touch sensitive
Convenient
Very easy to use
It is cheaper than regular whiteboards
Only needs a projector and screen
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