Which of the following is not a digital-to-analog conversion?

Which of the following is not a digital-to-analog conversion?

Which of the following is not a digital-to-analog conversion?




a. Pulse Amplitude Modulation (PAM)
b. Phase Shift Keying (PSK)
c. Quadrature Amplitude Modulation (QAM)
d. Frequency Shift Keying (FSK)




Answer: A


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