   end = micros();
 
   Serial.print("Time (us) for 10000 digitalRead calls: ");
-  Serial.println(end - start); // 22640 us
+  Serial.println(end - start);
 
   // Time 10k AVR PIND register reads
   start = micros();

  end = micros();

  Serial.print("Time (us) for 10000 AVR PIND register reads: ");
  Serial.println(end - start); // 3448 us

  pinMode(TEST_PIN, OUTPUT);
  // Time 10k digitalWrite calls

  end = micros();

  Serial.print("\nTime (us) for 10000 digitalWrite calls: ");
  Serial.println(end - start);

  // Time 10k AVR PIND register writes
  start = micros();
