Discussion
Which of the following does the actual display in a computer?
Answer: A
The CRT is the part that does the actual display in a computer: the cathode ray tube is the screen on which the picture is formed. VRAM is memory that holds the image data for the screen, and a GPU is the processor that calculates the graphics, so these two prepare the picture but do not show it. DPU is not a standard display device in the options and so cannot be the part that displays. The picture on a CRT is formed by an electron beam that strikes a phosphor-coated screen, which lights up where it is hit.
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