Make the Interrupt.

src/main.cpp

@@ -1,15 +1,31 @@
 #include <Arduino.h>
-#define BUZZER 3
+#define LED 13
+
+void displayMicros();
+void displayMillis();
 
 // Setup Section
 void setup() {
-	pinMode(BUZZER, OUTPUT);
+	Serial.begin(9600);
+	pinMode(LED, OUTPUT);
+	attachInterrupt(0, displayMicros, RISING); // #1
+	attachInterrupt(1, displayMillis, RISING);
+}
+
+void displayMicros() {
+	Serial.write("micros() = ");
+	Serial.println(micros());
+}
+
+void displayMillis() {
+	Serial.write("millis() = ");
+	Serial.println(millis());
 }
 
 // Loop Section
 void loop() {
-	analogWrite(BUZZER, 500);
+	digitalWrite(LED, HIGH);
 	delay(500);
-	digitalWrite(BUZZER, LOW);
+	digitalWrite(LED, LOW);
 	delay(500);
 }