Transcription: How does the monitor work? Signals from your computer's video card are loaded into three electron guns at the base of the monitor. There is one gun for each of three colors, red, blue and green. These three colors when mixed together can create all the colors you see on your screen. Now these guns don't shoot bullets. Instead they shoot a powerful beam of electrons towards the face of the monitor. The beams pass through the deflection It uses magnetism to bend the electronic beams so they can sweep across the entire screen and create the picture we see.
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