#define LED_hijau 13
#define LED_biru 12
#define LED_merah 11
#define LED_kuning 10
#define tombol 4

int simpan; 

void setup() {
pinMode(LED_hijau, OUTPUT);
pinMode(tombol, INPUT);
pinMode(LED_biru, OUTPUT);
pinMode(LED_merah, OUTPUT);
pinMode(LED_kuning, OUTPUT);

digitalWrite(LED_hijau, LOW);
digitalWrite(LED_biru, LOW);
digitalWrite(LED_merah, LOW);
digitalWrite(LED_kuning, LOW);
}

void loop() {
if (digitalRead(tombol) == HIGH) {
  simpan++;
  delay (600);
}

if ( simpan == 1) {
  digitalWrite(LED_hijau, HIGH);
}

if (simpan == 2) {
  digitalWrite(LED_biru, HIGH);
  digitalWrite(LED_hijau, LOW);
}

if (simpan == 3) {
  digitalWrite(LED_merah, HIGH);
  digitalWrite(LED_biru, LOW);
}

if (simpan == 4) {
  digitalWrite(LED_kuning, HIGH);
  digitalWrite(LED_merah, LOW);
}

if (simpan == 5) {
  digitalWrite(LED_hijau, HIGH);
  digitalWrite(LED_biru, HIGH);
  digitalWrite(LED_merah, HIGH);
  digitalWrite(LED_kuning, HIGH);
}

if (simpan == 6) {
  digitalWrite(LED_hijau, LOW);
  digitalWrite(LED_biru, LOW);
  digitalWrite(LED_merah, LOW);
  digitalWrite(LED_kuning, LOW);
}

else if (simpan == 7) {
  simpan = 0;
}

else
{
  digitalWrite(LED_hijau, LOW);
  digitalWrite(LED_biru, LOW);
  digitalWrite(LED_merah, LOW);
  digitalWrite(LED_kuning, LOW);
}
}