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Question

Which one is related to modulator and demodulator

A
multiplexer
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B
decoder
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C
encoder
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D
modem
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Solution

The correct option is B modem

Modem is related to modulator and demodulator.

A modem is a hardware device that allows a computer to send and receive information over telephone lines by converting digital data into an analog signal used on phone lines.

Modulation: the process of transforming digital information (1's and 0's) into analog signals.

Demodulation: the process of transforming analog signals, previously modulated, back into digital information.


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