Microcontrollers and Embedded Systems
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Questions and Answers

What is the function of the crystal oscillator in an Arduino board?

  • Helps Arduino in dealing with time issues (correct)
  • Stabilizes the DC voltages used by the processor
  • Controls the CPU, memory, and input/output interfaces
  • Regulates the voltage given to the Arduino board

    • How can an Arduino UNO board be reset?

  • By short-circuiting the GND and Vin pins
  • By pressing the 3.3V pin
  • By disconnecting and reconnecting the power supply
  • Using the reset button on the board or connecting an external reset button to the RESET pin (correct)

    • What is the purpose of the voltage regulator in an Arduino board?

  • To provide 3.3V and 5V output voltages
  • To control and stabilize the voltage given to the Arduino board (correct)
  • To ground the circuit
  • To deal with time issues

    • How can an Arduino board be powered directly from an AC mains power supply?

    <p>By connecting it to the Barrel Jack</p> Signup and view all the answers

    What are the functions of pins 3.3V, 5V, GND, and Vin on an Arduino board?

    <p>Supply 3.3V and 5V output voltages, ground the circuit, and provide input voltage</p> Signup and view all the answers

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