Question

what do you mean by cathode ray tube and LCD,LED?

Answer 1

Hey here's your answer
The cathode ray tube is a vacuum tube that contains one or more electron guns and a phosphorescent screen, and is used to display images
LED is light emitting did and
LCD is liquid crystal display
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Answer 2

The display quality of LED is age and temperature dependent while CRT has no such kind of issue. Moreover, LED is expensive and inaccessible to everyone. Similarly, LCD monitor doesn’t support black and white feature and also has less response time. On the contrary, CRT gives true black color and has a high response time. CRT monitors are cheap and accessible to everyone.