In the code for the Blink example, what function is called within the loop is used to turn on the built-in LED? What are the two arguments the function takes, and what do they represent? There are two possible values for the second argument; what are they, and what voltages do they lead to for the Arduino Uno?

/ constants won't change. They're used here to set pin numbers: int buttonPin = 2; // the number of the pushbutton pin int ledPin = 13; // the number of the LED pin

// variables will change: int buttonState = 0; // variable for reading the pushbutton status

void setup() { // initialize the LED pin as an output: pinMode(ledPin, OUTPUT); // initialize the pushbutton pin as an input: pinMode(buttonPin, INPUT); }

void loop() { // read the state of the pushbutton value: buttonState = digitalRead(buttonPin);

// check if the pushbutton is pressed. If it is, the buttonState is HIGH: if (buttonState == HIGH) { // turn LED on: digitalWrite(ledPin, HIGH); } else { // turn LED off: digitalWrite(ledPin, LOW); } }