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What is the function of the IOREF pin on the Arduino UNO?(a) To provide a constant 12V DC supply(b) To provide the voltage corresponding to the standard GPIO working voltage of the board(c) To take input voltage and set it as a reference for all GPIO operations(d) To provide groundThe question was asked in semester exam.The origin of the question is Board Pinout Structure in section Board Specifications and Types of Arduino |
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Answer» Right choice is (b) To provide the voltage corresponding to the standard GPIO working voltage of the board |
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