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LCDs operate from a frequency ranges from ___________

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LCDs operate from a frequency ranges from ___________

(a) 10Hz to 60Hz

(b) 50Hz to 70Hz

(c) 30Hz to 60Hz

(d) None of the Mentioned

I have been asked this question by my school principal while I was bunking the class.

Question is from Liquid Crystal Displays in section Combinational Circuits of Digital Circuits

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Right answer is (c) 30Hz to 60Hz

Easiest explanation: LCDs operate from a frequency ranges from 30Hz to 60Hz. LCDs operate from a voltage ranges from 3 to 15V rms. They provide thinner displays as compared to Cathode Ray Tubes.

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