COMPUTER SCIENCE AND ENGINEERING
COMPUTER GRAPHICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Cathode Ray Tube
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Common Ray Tube
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Control Ray Tube
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None of these
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Detailed explanation-1: -A cathode ray tube (CRT) is the glass video display component of an electronic device (usually a television or computer monitor).
Detailed explanation-2: -The cathode creates an electron cloud (emits electrons) whose electrons are extracted, accelerated and focused into an electron beam. Color CRTs have three cathodes: one for red, green and blue. The heater sits inside the cathode but doesn’t touch it; the cathode has its own separate electrical connection.
Detailed explanation-3: -A cathode-ray tube (CRT) is a specialized vacuum tube in which images are produced when an electron beam strikes a phosphorescent surface. Most desktop computer displays make use of CRTs.
Detailed explanation-4: -A CRT consists of three basic parts: the electron gun assembly, the phosphor viewing surface, and the glass envelope. The electron gun assembly consists of a heated metal cathode surrounded by a metal anode. The cathode is given a negative electrical voltage and the anode a positive voltage.