Discussion
Cathode Ray Tube (monitor) receives information as an analog signal through a
Answer: C
Correct answer: Video Card
A CRT is driven by an analogue signal, and the video card is what produces it: the frame buffer holds digital pixel values and a digital-to-analogue converter turns them into the varying voltages that control the beam intensity.
That conversion is why the classic VGA connector carries analogue signals. Flat panels are digital devices, so DVI, HDMI and DisplayPort omit the conversion and send the pixel values directly - a change of interface following from a change of display technology.
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