int x=-1;
void setup() {
  Serial.begin(9600);
  Serial.print("Decimal");
  Serial.print("\t");
  Serial.print("Binary");
  Serial.print("\t"); 
  Serial.print("\n");
}

void loop() {
 while (digitalRead(8)==1);
  x++;
  Serial.print(x,DEC);
  Serial.print("\t");

  Serial.print(x,BIN);
  Serial.println("\t");
  delay(300);
while (digitalRead(8)==0);

}