Which of the following is not a method to convert analog signals to digital signals?(a) Pulse Code Modulation(b) Pulse Amplitude Modulation(c) Pulse Width Modulation(d) Frequency ModulationI have been asked this question in semester exam.This intriguing question originated from Digital Input Output topic in division Arduino Programming of Arduino

Which of the following is not a method to convert analog signals to di

1.	Which of the following is not a method to convert analog signals to digital signals?(a) Pulse Code Modulation(b) Pulse Amplitude Modulation(c) Pulse Width Modulation(d) Frequency ModulationI have been asked this question in semester exam.This intriguing question originated from Digital Input Output topic in division Arduino Programming of Arduino
Answer» Correct answer is (d) Frequency Modulation Explanation: Any Modulation TECHNIQUE that converts an analog signal to a digital signal is of immense importance in pure digital circuits like the Arduino. These help the Arduino’s circuit to RECEIVE raw unmodulated signals from the outside and process them in a digital environment. Here frequency modulation is the only modulation technique that only WORKS with analog-to-analog signal modulation.

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