byte LED_9 = 9;
byte LED_8 = 8;
byte A = 86;

void setup()
{
  pinMode(LED_9, OUTPUT);
  pinMode(LED_8, OUTPUT);
}

void loop()
{

 
  

  for (int i = 7; i >= 0; i--) {
    if (A & (1 << i)) {
      digitalWrite(LED_8, HIGH);
    } else {
      digitalWrite(LED_8, LOW); 
    }

     digitalWrite(LED_9, LOW);
     delay(500); 
    digitalWrite(LED_9, HIGH);
      delay(500); 
  }
}