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Energy Star Computers Program
An energy conservation program launched by the US Environmental Protection Agency (EPA), promotes the manufacture and marketing of
energy-efficient office automation equipment. Companies joining this program, must be willing to commit themselves to manufacture one or
more products capable of going into a low -power state (< 30 W) either after a period of inactivity, or after a predetermined time selected by
the user.
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Gamma
Screen luminance as a function of video voltage approximately follows a mathematical power function of the input video signal, the
exponent of which is called gamma.
Grayscale
An achromatic scale ranging from black through a series of successively lighter grays to white. Such a series may be made up of steps,
which appear to be equally distant from one another. If the Analog/ Digital converter is 8 bit, then the monitor can display at most 2
8
= 256
levels. For a color monitor, R.G.B. each color hads 256 levels. Thus, total color can display is 256x256x256= 16.7 million.
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