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What is the function of the AREF pin in the Arduino UNO?(a) It is used as a reference voltage for all analog voltage calculations in the board(b) It is used as a reference voltage for all digital voltage calculations in the board(c) It is used as a reference voltage for the power source on the board(d) It is used as a reference voltage for the ground pins on the boardThis question was posed to me in an interview for internship.My doubt stems from Board Pinout Structure in division Board Specifications and Types of Arduino |
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Answer» Right answer is (a) It is used as a reference VOLTAGE for all analog voltage CALCULATIONS in the BOARD |
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