void setup(){
  pinMode(6 , OUTPUT);
  pinMode(7 , OUTPUT);
  pinMode(8 , OUTPUT);
  pinMode(9 , OUTPUT);
  pinMode(10 , OUTPUT);
  pinMode(11 , OUTPUT);
  pinMode(12 , OUTPUT);
}

uint8_t contador = 0;
uint8_t disp7Seg[] = {0x3F , 0x06, 0x5B, 0x4F, 0x66, 0x6D, 0x7D, 0x07, 0x7F, 0x67};
uint8_t selectBit = 0b00000001;

void loop(){
  
  if(contador > 9){
    contador = 0;
  }

  digitalWrite(6 ,  disp7Seg[contador] & (selectBit << (0)) );
  digitalWrite(7 ,  disp7Seg[contador] & (selectBit << (1)) );
  digitalWrite(8 ,  disp7Seg[contador] & (selectBit << (2) ));
  digitalWrite(9 ,  disp7Seg[contador] & (selectBit << (3) ));
  digitalWrite(10 , disp7Seg[contador] & (selectBit << (4) ));
  digitalWrite(11 , disp7Seg[contador] & (selectBit << (5) ));
  digitalWrite(12 , disp7Seg[contador] & (selectBit << (6) ));

  contador++;
  delay(500);

}