int a=2;
int b=3;
int c=4;
int d=5;
int e=6;
int f=7;
int g=8;
void setup()
{
  for(int i=2; i<=8; i++)
  pinMode(i, OUTPUT);
}

void sifir()
{
  digitalWrite(a,0); //sıfır
  digitalWrite(b,0);
  digitalWrite(c,0);
  digitalWrite(d,0);
  digitalWrite(e,0);
  digitalWrite(f,0);
  digitalWrite(g,1);
  delay(1000);
}
void bir()
{
  digitalWrite(a,1); //bir
  digitalWrite(b,0);
  digitalWrite(c,0);
  digitalWrite(d,1);
  digitalWrite(e,1);
  digitalWrite(f,1);
  digitalWrite(g,1);
  delay(1000);
}
void iki()
{
  digitalWrite(a,0); //iki
  digitalWrite(b,0);
  digitalWrite(c,1);
  digitalWrite(d,0);
  digitalWrite(e,0);
  digitalWrite(f,1);
  digitalWrite(g,0);
  delay(1000);
}
void uc()
{
  digitalWrite(a,0); //üç
  digitalWrite(b,0);
  digitalWrite(c,0);
  digitalWrite(d,0);
  digitalWrite(e,1);
  digitalWrite(f,1);
  digitalWrite(g,0);
  delay(1000);
}
void dort()
{
  digitalWrite(a,1); //dört
  digitalWrite(b,0);
  digitalWrite(c,0);
  digitalWrite(d,1);
  digitalWrite(e,1);
  digitalWrite(f,0);
  digitalWrite(g,0);
  delay(1000);
}
void bes()
{
  
  digitalWrite(a,0); //beş
  digitalWrite(b,1);
  digitalWrite(c,0);
  digitalWrite(d,0);
  digitalWrite(e,1);
  digitalWrite(f,0);
  digitalWrite(g,0);
  delay(1000);
}
void alti()
{
  digitalWrite(a,0); //altı
  digitalWrite(b,1);
  digitalWrite(c,0);
  digitalWrite(d,0);
  digitalWrite(e,0);
  digitalWrite(f,0);
  digitalWrite(g,0);
  delay(1000);
}
void yedi()
{
  digitalWrite(a,0); //yedi
  digitalWrite(b,0);
  digitalWrite(c,0);
  digitalWrite(d,1);
  digitalWrite(e,1);
  digitalWrite(f,1);
  digitalWrite(g,1);
  delay(1000);
}
void sekiz()
{
  digitalWrite(a,0); //sekiz
  digitalWrite(b,0);
  digitalWrite(c,0);
  digitalWrite(d,0);
  digitalWrite(e,0);
  digitalWrite(f,0);
  digitalWrite(g,0);
  delay(1000);
}
void dokuz()
{
  digitalWrite(a,0); //dokuz
  digitalWrite(b,0);
  digitalWrite(c,0);
  digitalWrite(d,0);
  digitalWrite(e,1);
  digitalWrite(f,0);
  digitalWrite(g,0);
  delay(1000);
}
void loop()
{
  sifir();
  bes();
  sifir();
  bes();
  alti();
  alti();
  uc();
  sifir();
  yedi();
  uc();
  bes();
}