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What is the primary purpose of Arduino's digital and analog input/output (I/O) pins?

  • Power supply

  • Data storage

  • Interfacing with expansion boards

  • Display output

Answer

Arduino boards are equipped with sets of digital and analog input/output (I/O) pins that are primarily used for interfacing with various expansion boards (shields) or breadboards (for prototyping) and other circuits. This allows users to create custom devices and interactive objects.
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