Q97
What are the two types of monitors?
A.
CRT and DVD
B.
CRT and LCD
AnswerC.
DVD and VCD
D.
LCD and DVD
E.
None of these
Answer: Option B
Solution
Answer: Option B
Solution:
CRT : The cathode ray tube (CRT) is a vacuum tube that contains one or more electron guns and a phosphorescent screen, and is used to display images. It modulates, accelerates, and deflects electron beam(s) onto the screen to create the images.
LCD : A liquid-crystal display (LCD) is a flat-panel display or other electronically modulated optical device that uses the light-modulating properties of liquid crystals. Liquid crystals do not emit light directly, instead using a backlight or reflector to produce images in color or monochrome.