int clockState = LOW;
void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
pinMode(0, OUTPUT);
pinMode(A5, OUTPUT);
pinMode(3, INPUT);
pinMode(4, INPUT);
pinMode(5, INPUT);
pinMode(6, INPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
  int x1 = digitalRead(3);
  int x2 = digitalRead(4);
  int x3 = digitalRead(5);
  int x4 = digitalRead(6);
  if(clockState==HIGH){int decimalValue = 8 * x4 + 4 * x3 + 2 * x2 + 1 *x1;
  Serial.println(decimalValue);
  Serial.println();}
clockState = (clockState == LOW) ? HIGH : LOW;
  
  // Output the clock state on the clockPin
digitalWrite(A5, clockState);
digitalWrite(0, LOW);

  
  // Add a delay to control the clock frequency
  delay(1000);
}