Question

How many pins are available for interrupt functions in the Arduino Zero?

(a) No pins

(b) All pins except pin 4

(c) Only pin 4

(d) Only pin 3

The question was asked in class test.

I would like to ask this question from Interrupt Service Routine topic in section Arduino Programming of Arduino

Answer 1

The correct option is (b) All pins except pin 4

To explain: ISR allows to initiate an interrupt routine in any Arduino Board. The interrupt service routine can be used to automate a number of functions in an Arduino. Usually a number of pins are assigned for any Board. The Arduino Zero has ISR functionality enabled for all it’s pins except pin 4.