LED Blink using Arduino UNO

int myLED = 12;             // assign LED to digital pin 12

void setup(){               // setup the device
  pinMode(myLED, OUTPUT);   // assign myLED as OUTPUT device
}

void loop(){                 // repeate the programs
  digitalWrite(myLED, HIGH); // switch the LED ON
  delay(500);                // delay in 500 milliseconds
  digitalWrite(myLED, LOW);  // switch the LED OFF
  delay(500);
}