1a The Blinking LED

/*Experiment 1a - The Blinking LED
  This program covers using delay to turn ON/OFF the LED in regular interval
  Components Required
   1 Arduino Board
   1 LED
   1 Resistor (220 ohm to 1K ohm)
*/


void setup()   {
  pinMode(13, OUTPUT);       // Initialize Arduino Digital Pin 13 as output
}


void loop()
{
  digitalWrite(13, HIGH);   // Switch On LED
  delay(1000);              // Wait for 1000 millisecond (or) second
  digitalWrite(13, LOW);    // Switch Off LED
  delay(1000);              // Wait for 1 second
}