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Which one of the following scheme is a digital modulation technique ?

Which one of the following scheme is a digital modulation technique ? Correct Answer On-off keying

All given options are digital modulation schemes but the most appropriate option amongst them is ON-OFF keying which is also known as ASK.

Amplitude-shift keying (ASK) is a form of amplitude modulation that represents digital data as variations in the amplitude of a carrier wave.

we can understand it by the given diagram

Important Points

Analog Modulation:

In this scheme, input needs to be in analog (continuous format)

Digital modulation:

In this scheme, input needs to be in digital format.

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