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Question

CRTs, LEDs and LCDs are ---

NMR variations

Used for output

Common types of Display screen

Obsolete discover of electrical mouse

Punch and card technology

ANSWER : 2

Descrption

<span style = "font - size: 11pt; font - family: Arial; color: #000000; background - color: #ffffff; font - weight: 400; font - style: normal; font - variant: normal; text - decoration: none; vertical - align: baseline; white - space: pre - wrap;">CRT - Cathode Ray Tube (এক ধরনের মনিটর, output device)
<span style = "font - size: 11pt; font - family: Arial; color: #000000; background - color: #ffffff; font - weight: 400; font - style: normal; font - variant: normal; text - decoration: none; vertical - align: baseline; white - space: pre - wrap;">LCD - Liquid Crystal Display (এক ধরনের Display, output device)
<span style = "font - size: 11pt; font - family: Arial; color: #000000; background - color: #ffffff; font - weight: 400; font - style: normal; font - variant: normal; text - decoration: none; vertical - align: baseline; white - space: pre - wrap;">LED - Light Emitting Diode. (এক ধরনের Light/Display, output device)

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