// Nama : Refki Pradana
// NIM : 221420100
// Matkul : Pemprograman Platform Khusus

const int led1 = 13;
const int led2 = 12;
const int led3 = 11;
const int led4 = 10;

void setup() {
  pinMode(led1, OUTPUT);
  pinMode(led2, OUTPUT);
  pinMode(led3, OUTPUT);
  pinMode(led4, OUTPUT);
}

void loop(){
  //Kondisi 1 : Semua LED menyala bersama
  digitalWrite(led1, HIGH);
  digitalWrite(led2, HIGH);
  digitalWrite(led3, HIGH);
  digitalWrite(led4, HIGH);
  delay(1000);

  //Kondisi 2 : Semua LED mati
  digitalWrite(led1, LOW);
  digitalWrite(led2, LOW);
  digitalWrite(led3, LOW);
  digitalWrite(led4, LOW);
  delay(1000);

  //Kondisi 3 : Menyala Bergantian 
  digitalWrite(led1, HIGH);
  delay(1000);

  digitalWrite(led2, HIGH);
  delay(1000);

  digitalWrite(led3, HIGH);
  delay(1000);

  digitalWrite(led4, HIGH);
  delay(1000);

  //Kondisi 4 : Mati Mundur
  digitalWrite(led4, LOW);

  digitalWrite(led3, HIGH);
  delay(1000);
  digitalWrite(led3, LOW);

  digitalWrite(led2, HIGH);
  delay(1000);
  digitalWrite(led2, LOW);

  digitalWrite(led1, HIGH);
  delay(1000);
  digitalWrite(led1, LOW);

  //Kondisi 5 : Semua LED mati
  digitalWrite(led1, LOW);
  digitalWrite(led2, LOW);
  digitalWrite(led3, LOW);
  digitalWrite(led4, LOW);
  delay(1000);
}