void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  Serial.println("Hello, Arduino");
  pinMode(13, OUTPUT);
  pinMode(12, OUTPUT);
  pinMode(11, OUTPUT);
  pinMode(10, OUTPUT);
}

void loop() 
{
  coba1();
  coba1();
  coba1();
  coba2();
}

void coba1()
{
 digitalWrite(13, HIGH);   // LED padam
 digitalWrite(12, LOW);   // LED padam
 digitalWrite(11, LOW);   // LED padam
 digitalWrite(10, LOW);   // LED padam
 delay(500);                     // tunggu 1 detik
 digitalWrite(13, LOW);   // LED menyala
 digitalWrite(12, HIGH);   // LED menyala
 digitalWrite(11, LOW);   // LED menyala
 digitalWrite(10, LOW);   // LED menyala
 delay(500);                     // tunggu 1 detik
 digitalWrite(13, LOW);   // LED menyala
 digitalWrite(12, LOW);   // LED menyala
 digitalWrite(11, HIGH);   // LED menyala
 digitalWrite(10, LOW);   // LED menyala
 delay(500);                     // tunggu 1 detik
 digitalWrite(13, LOW);   // LED menyala
 digitalWrite(12, LOW);   // LED menyala
 digitalWrite(11, LOW);   // LED menyala
 digitalWrite(10, HIGH);   // LED menyala
 delay(500);                     // tunggu 1 detik
}

void coba2()
{
 digitalWrite(13, HIGH);   // LED padam
 digitalWrite(12, HIGH);   // LED padam
 digitalWrite(11, LOW);   // LED padam
 digitalWrite(10, LOW);   // LED padam
 delay(500);                     // tunggu 1 detik
 digitalWrite(13, LOW);   // LED menyala
 digitalWrite(12, LOW);   // LED menyala
 digitalWrite(11, HIGH);   // LED menyala
 digitalWrite(10, HIGH);   // LED menyala
 delay(500);                     // tunggu 1 detik
}