bool bits[8] = {0,0,0,0,0,0,0,0};



void setup() 
{
  Serial.begin(115200);
  pinMode(4, OUTPUT);
  pinMode(5, OUTPUT);
  pinMode(6, OUTPUT);
  pinMode(7, OUTPUT);
  pinMode(8, OUTPUT);
  pinMode(9, OUTPUT);
  pinMode(10, OUTPUT);
  pinMode(11, OUTPUT);
  pinMode(13, INPUT);
  digitalWrite(4, LOW);
  digitalWrite(5, LOW);
  digitalWrite(6, LOW);
  digitalWrite(7, LOW);
}

void render()
{
  for (int i = 0; i < 8; i++)
  {
    switch(bits[i])
    {
      case 0:
        digitalWrite((i + 4), LOW);
        break;
      case 1:
        digitalWrite((i + 4), HIGH);
        break;
    }
  }
}
void count()
{
  bool carry = true;

    for (int i = 7; i >= 0; i--)
  {
    if (carry == true)
    {
      switch(bits[i])
      {
        case 0:
          bits[i] = 1;
          carry = false;
          break;
        case 1:
          bits[i] = 0;
          carry = true;
          break;
      }
    }
  }
  Serial.println((bits[7]*1) + (bits[6]*2) + (bits[5]*4) + (bits[4]*8) + (bits[3]*16) + (bits[2]*32) + (bits[1]*64) + (bits[0]*128));
  delay(200);
}
void loop() 
{
  render();
  if (digitalRead(13) == HIGH)
  {
  count();
  }
}