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CRT: Cathode-ray Tube. An electron tube that has an electron gun, a deflection system, and a screen. This tube is used to display visual electronic signals. An electron beam is focused on a luminescent screen than varied in position and intensity to produce a visible pattern. CRT displays are in decline, and are being replaced by Flat screen LCD displays that reduce weight, take up less space, and consume less power. Flat screens handle shock better than CRTs.
Refer here for CRT Manufacturers
