Electronics

Question 1

digitalRead()

Answer 1

Reads the value from a specified digital pin, either HIGH or LOW

Question 2

delay()

Answer 2

delays the circuit action

Question 3

digitalWrite()

Answer 3

Tells the circuit/Arduino board what to do
Ex.
void loop() {
digitalWrite(13, HIGH); // sets the digital pin 13 on
delay(1000); // waits for a second
digitalWrite(13, LOW); // sets the digital pin 13 off
delay(1000); // waits for a second
}

Question 4

pinMode()

Answer 4

Configures the specified pin to behave either as an input or an output.
Ex.
void setup() {
pinMode(13, OUTPUT); // sets the digital pin 13 as output
}