How many RX-TX pairs of pins are present in the Arduino Mega?(a) 1(b) 2(c) 3(d) 4This question was addressed to me during an interview.This interesting question is from Serial and Stream Communications in division Arduino Programming of Arduino

How many RX-TX pairs of pins are present in the Arduino Mega?(a) 1(b)

1.	How many RX-TX pairs of pins are present in the Arduino Mega?(a) 1(b) 2(c) 3(d) 4This question was addressed to me during an interview.This interesting question is from Serial and Stream Communications in division Arduino Programming of Arduino
Answer» The correct option is (d) 4 The best explanation: The ARDUINO Mega has 3 RX-TX pairs; 0&1, 19&18, 17&16 and 15&14. The Serial pins are USED for establishing and maintaining communications between the computer and the Arduino. However, once any of these RX-TX pairs are setup for serial communications, during the COURSE of the program they cannot be used for GPIO.

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How many RX-TX pairs of pins are present in the Arduino Mega?(a) 1(b) 2(c) 3(d) 4This question was addressed to me during an interview.This interesting question is from Serial and Stream Communications in division Arduino Programming of Arduino

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