void setup()

{

// menjadikan PIN 4, 5, dan 3 sebagai OUTPUT

pinMode(5, OUTPUT);

pinMode(4, OUTPUT);

pinMode(3, OUTPUT);

}

void loop()

{

digitalWrite(5, HIGH);

delay(100);

digitalWrite(5, LOW);

digitalWrite(4, HIGH);

delay(100);

digitalWrite(4, LOW);

digitalWrite(3, HIGH);

delay(100);

digitalWrite(3, LOW);

}