int buzzer = 8;
int led = 0;

void setup() {
  pinMode(buzzer, OUTPUT);
  pinMode(led, OUTPUT);
}

void loop() {
  digitalWrite(buzzer, HIGH);
  tone(8, 600, 1000);
  digitalWrite(led, HIGH);
  delay(1000);
  digitalWrite(buzzer, LOW);
  digitalWrite(led, LOW);
  delay(1000);
}