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How many digital pins are there on the UNO board?(a) 14(b) 12(c) 16(d) 20I have been asked this question in semester exam.This intriguing question comes from Arduino in division Prototyping Embedded Devices of IOT

Answer»

The correct option is (a) 14

The explanation: It has 14 digital pins input/output pins of which 6 can be used as PWM output, 6 analog INPUTS, a USB connection, a POWER jack, a RESET button and more.



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