const int digit1Pin = 8;
const int digit2Pin = 9;
const int segmentPins[] = {1, 2, 3, 4, 5, 6, 7, 0};

const byte digits[] = {
  B11000000, //0
  B11111001, //1
  B10100100, //2
  B10110000, //3
  B10011001, //4
  B10010010, //5
  B10000010, //6
  B11111000, //7
  B10000000, //8
  B10010000, //9
};

void setup() {
  pinMode(digit1Pin, OUTPUT);
  pinMode(digit2Pin, OUTPUT);

  for (int i = 0; i < 8; i++) {
    pinMode(segmentPins[i], OUTPUT);
  }
}

void loop() {
 for (int i = 9999; i >= 0; i--) {
  displayNumber(digit1Pin, i / 1000);
  delay(5);

  displayNumber(digit2Pin, (i / 100) % 10);
  delay(5);

 }
}

void displayNumber(int digitPin, int number) {
  //Matikan semua digit
  digitalWrite(digit1Pin, LOW);
  digitalWrite(digit2Pin, LOW);
  
  // Tampilkan angka pada segmen-segmen yang sesuai
  for (int i = 0; i < 8; i++) {
    if (bitRead(digits[number], i)) {
      digitalWrite(segmentPins[i], HIGH);
  } else {
      digitalWrite(segmentPins[i], LOW);
  }
}

  // Aktifkan digit yang sesuai
digitalWrite(digitPin, HIGH);
}