In that 14 pins (D0 to D13) are true digital IO pins, which can be configured as per you application using pinMode(), digitalWrite() and digitalRead() functions.Īll these Digital IO pins are capable of sourcing or sinking 20mA of current (maximum 40mA is allowed). Of the 32 pins available on the UNO board, 22 pins are associated with input and output. What are the Input and Output Pins of Arduino UNO?
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