int a = 2;
int b = 3;
int c = 4;
int d = 5;
int e = 6;
int f = 7;
int g = 8;
int b1 = 10;
int b2 = 11;
int apa = 0;
int bujer = 9;


void setup() {
Serial.begin(9600);
  pinMode(a, OUTPUT);
  pinMode(b, OUTPUT);
  pinMode(c, OUTPUT);
  pinMode(d, OUTPUT);
  pinMode(e, OUTPUT);
  pinMode(f, OUTPUT);
  pinMode(g, OUTPUT);
  pinMode(b1, INPUT_PULLUP);
  pinMode(b2, INPUT_PULLUP);
  pinMode(bujer, OUTPUT);

}

void zero (){
  digitalWrite(a,1);
  digitalWrite(b,1);
  digitalWrite(c,1);
  digitalWrite(d,1);
  digitalWrite(e,1);
  digitalWrite(f,1);
  digitalWrite(g,0);
}

void one (){
  digitalWrite(a,0);
  digitalWrite(b,1);
  digitalWrite(c,1);
  digitalWrite(d,0);
  digitalWrite(e,0);
  digitalWrite(f,0);
  digitalWrite(g,0);
}

void two (){
  digitalWrite(a,1);
  digitalWrite(b,1);
  digitalWrite(c,0);
  digitalWrite(d,1);
  digitalWrite(e,1);
  digitalWrite(f,0);
  digitalWrite(g,1);
}

void three (){
  digitalWrite(a,1);
  digitalWrite(b,1);
  digitalWrite(c,1);
  digitalWrite(d,1);
  digitalWrite(e,0);
  digitalWrite(f,0);
  digitalWrite(g,1);
}

void four (){
  digitalWrite(a,0);
  digitalWrite(b,1);
  digitalWrite(c,1);
  digitalWrite(d,0);
  digitalWrite(e,0);
  digitalWrite(f,1);
  digitalWrite(g,1);
}

void five (){
  digitalWrite(a,1);
  digitalWrite(b,0);
  digitalWrite(c,1);
  digitalWrite(d,1);
  digitalWrite(e,0);
  digitalWrite(f,1);
  digitalWrite(g,1);
}

void six (){
  digitalWrite(a,1);
  digitalWrite(b,0);
  digitalWrite(c,1);
  digitalWrite(d,1);
  digitalWrite(e,1);
  digitalWrite(f,1);
  digitalWrite(g,1);
}

void seven (){
  digitalWrite(a,1);
  digitalWrite(b,1);
  digitalWrite(c,1);
  digitalWrite(d,0);
  digitalWrite(e,0);
  digitalWrite(f,0);
  digitalWrite(g,0);
}

void eight (){
  digitalWrite(a,1);
  digitalWrite(b,1);
  digitalWrite(c,1);
  digitalWrite(d,1);
  digitalWrite(e,1);
  digitalWrite(f,1);
  digitalWrite(g,1);
}

void nine (){
  digitalWrite(a,1);
  digitalWrite(b,1);
  digitalWrite(c,1);
  digitalWrite(d,1);
  digitalWrite(e,0);
  digitalWrite(f,1);
  digitalWrite(g,1);
}
void loop() {


int s1 = digitalRead(b1);
int s2 = digitalRead(b2);
if (s1 == 0){
  apa=apa+1;
  delay(100);
  analogWrite(bujer, 128); // Atur nilai PWM sesuai kebutuhan
  delay(100);
  analogWrite(bujer, 0);
  delay(100);
}

if (s2 == 0){
  apa=apa-1;
  delay(100);
  analogWrite(bujer, 128); // Atur nilai PWM sesuai kebutuhan
  delay(100);
  analogWrite(bujer, 0);
  delay(100);
}

Serial.print(apa);
switch (apa)
{
  case 0 :
  zero ();
  break;

  case 1 :
  one ();
  break;
    case 2 :
  two ();
  break;
    case 3 :
  three ();
  break;
    case 4 :
  four ();
  break;
    case 5 :
  five ();
  break;
    case 6 :
  six ();
  break;
    case 7 :
  seven ();
  break;
    case 8 :
  eight ();
  break;
    case 9 :
  nine ();
  break;
}

}