byte segment
byte segment2[] =
{
  0b01101111
};  

int cislo1, cislo = 0;
void setup ()
{
  DDRB &= ~(1 << 1);
  PORTB |= (1 << 1);

  DDRD = 0b11111111;
  PORTD = 0b00000000;
}

void loop()
{
  if (!(PINB & (1 << 1)))
  {
    PORTD = segment2[cislo1];
    delay(1000);
  }
  else
  {
    PORTD = 0b00000000;
    cislo = (cislo + 1) % 10;
    delay(1000);
  }
}