An Arduino Uno application requires an input from a user activated contact sensor to call a function that counts how many time the contact sensor is activated. The input from the contact sensor can be...

Extracted text: An Arduino Uno application requires an input from a user activated contact sensor to call a function that counts how many time the contact sensor is activated. The input from the contact sensor can be either program driven (pooled) or interrupt driven. (i) Explain what are "program driven IO" and “interrupt driven IO", and discuss the main advantages / disadvantages of each. (ii) Demonstrate how interrupt driven IO can be accomplished by writing a simple program in Arduino C to read the contact sensor input using interrupt, and count the number of times the contact sensor is activated. Apply the proper Arduino C setup and loop structure, and present suitable comments with each line of your program. Explain any and all assumptions for your resistor selection, and ignore debouncing issues.