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A computer display is an output
device that gives user its feedback in from of text, images or
animations. Initially computer displays were very basic in nature,
they were monochrome displays. With the passage of time they evolved
into machines capable of displaying high resolution and quality
graphics for multimedia purposes.
Modern video cards also let
users connect a TV monitor directly to a computer through a TV out
slot. This option is only good for multimedia purposes like gaming
and watching videos etc. For normal office applications and internet
surfing normal monitor will suffice. The reason is that a computer
monitor displays images in dots, while a TV displays in images form
of lines. This makes harder to view text on a TV.
LCD displays are becoming very
popular over the time because of their small volume, low power
consumption, less emission of radiations, and excellent display.
Nearly all of the notebooks use LCD displays. LCDs are all flat
paneled displays.
There are several factors to
determining the quality of a display. They include:
Aspect Ratio:
Initially the computer displays had 4:3 aspect ratio
just like a television, but later on with the arrival of wide screen
LCDs the aspect ratio jumped to 16:9. These wide screens offer
better viewing of DVD movies and games.
Contrast Ratio:
It is the ratio of lightest and darkest colors tat
can be produced by a computer display. Current displays offer a
contrast ratio 600:1 and higher.
Resolution:
Resolution is the measure of number of pixels on
horizontal and vertical axis. A computer display can have different
resolutions e.g. 1024x768, 1280x1024 and 1600x1200, greater
resolution means more crisp display.
Dot Pitch:
Dot pitch is another measure of computer display; it is distance
between the pixels on the display. Smaller the distance offers
better the display.
Response time:
Response time is the time in milliseconds that a
pixel requires to change its state. This aspect counts much in
watching videos and playing games. |
