void setup()
{
  DDRD = 0B11111100;
  DDRB = 0x01;
  Serial.begin(9600);

  //  PORTD = 0xF8;
  //  PORTB = 0x01;
}

int contor = 0, state = 0, old_state = 0;
int state2 = 0, old_state2 = 0;

void loop()
{

  state = PINB & 0b00001000;

  if (state && (old_state == 0))
  {
    if (contor == 9)
      contor = 0;
    else
      contor++;
  }

  state2 = PINB & 0b00010000;

  if (state2 && (old_state2 == 0))
  {
    if (contor == 0)
      contor = 9;
    else
      contor--;
  }

  Serial.println(contor);

  switch (contor)
  {
    case 0:
      PORTD = 0xF8;
      PORTB = 0x01;
      break;

    case 1:
      PORTD = 0x48;
      PORTB = 0x00;
      break;

    case 2:
      PORTD = 0x9C;
      PORTB = 0x01;
      break;

    case 3:
      PORTD = 0x5C;
      PORTB = 0x01;
      break;

    case 4:
      PORTD = 0x6C;
      PORTB = 0x00;
      break;

    case 5:
      PORTD = 0x74;
      PORTB = 0x01;
      break;

    case 6:
      PORTD = 0xF4;
      PORTB = 0x01;
      break;

    case 7:
      PORTD = 0x58;
      PORTB = 0x00;
      break;

    case 8:
      PORTD = 0xFC;
      PORTB = 0x01;
      break;

    case 9:
      PORTD = 0x7C;
      PORTB = 0x01;

  }
  old_state = state;
  old_state2 = state2;
}