/* LED and Buzzer

Circuit Connections:
PIN_0 => LED_Anode - LED_Cathode = > Resistor 220Ω => Gnd
PIN_4 => Buzzer_Positive - Buzzer_Negative = > Resistor 100Ω => Gnd
*/

//The setup() function initializes and sets the initial values
//It will only run once after each powerup or reset
void setup()
{
  //Configures the PIN_0 and the PIN_4 to behave as outputs
  pinMode(0, OUTPUT);
  pinMode(4, OUTPUT);  //complete the line
}

//This function loops consecutively
void loop()
{
  digitalWrite(0, LOW);  //Write a LOW value (0V) to digital pin 0 – LED off
  digitalWrite(4, HIGH); //Write a HIGH value (5V) to digital pin 4 – Buzzer on
  delay(2500); // Pauses the program for 2500 milliseconds
  digitalWrite(0, HIGH); //Write a HIGH value (5V) to digital pin 0 – LED on
  digitalWrite(4, LOW);  //Write a LOW value (0V) to digital pin 4 – Buzzer off
  delay(2500); // Wait for 2500 milliseconds
}