COMPUTER HARDWARE COMPONENTS FUNCTIONS
COMPUTER OUTPUT DEVICES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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True
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False
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Either A or B
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None of the above
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Detailed explanation-1: -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-2: -A cathode ray tube (CRT) is the glass video display component of an electronic device (usually a television or computer monitor).
Detailed explanation-3: -Explanation: CRT stands for “Cathode Ray Tube” and it is used in monitors and TV’s.
Detailed explanation-4: -The full form of CRT is Cathode Ray Tube. CRT is a vacuum tube in which a fluorescent projector produces a trace of an electron beam, deflected by induced magnetic and electric fields.
Detailed explanation-5: -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.