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monitor controller to be automatically configured to make optimal use of the display without
manual user interaction. DDC is implemented as part of the new Plug & Play approach
introduced into the PC market to increase user friendliness.
The three levels developed for Plug & play are: (1) DDC1, monitor send data to the PC; (2)
DDC2B, PC can request information from monitor; and (3) DDC2Bi which is a two-way
communication - monitor can be addressed and PC or graphics board can give commands to
monitor.
DDC 1/2B
See DDC.
DDC 2Bi
See DDC.
Degaussing
The procedure of demagnetizing the shadow mask and associated metal parts of a picture tube
at switch-on to minimize picture distortion. This is usually accomplished by means of a special
degaussing coil through which a decaying alternating current is passed to generate an alternating
magnetic field that gradually decays to demagnetize the tube. Some monitors offer a manual
degaussing facility that can be activated at any time.
Digital control
Microprocessor-based digital control of picture parameters and video modes for complete control
of picture settings and modes and instant recall of all settings at the push of a button. This is a
very advanced feature that allows the user to switch to any required mode at any instant without
having to spend time readjusting the picture. It is currently available in most Philips monitors.
Dot pitch
The shortest distance between two phosphor dots of the same color on the screen. The smaller
the dot pitch, the better the resolution of the monitor.
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