#define Buzzer_Pin 11
  void setup () 
 {
pinMode (Buzzer_Pin, OUTPUT );
pinMode(1,OUTPUT );
pinMode(2,OUTPUT );
pinMode (3,OUTPUT );

}

void loop()
 {
 tone(Buzzer_Pin,HIGH );
digitalWrite (1,LOW );
digitalWrite(2, HIGH  );
digitalWrite (3,LOW );
delay(500);
noTone(Buzzer_Pin);
digitalWrite(1,LOW );
digitalWrite (3,HIGH );
digitalWrite(2,LOW  );
delay (300);
tone(Buzzer_Pin,HIGH );
digitalWrite (1,HIGH );
digitalWrite (2,LOW );
digitalWrite (3, LOW );
delay(200); 
noTone  (Buzzer_Pin );
digitalWrite (1,HIGH );
digitalWrite (2,HIGH );
digitalWrite (3,HIGH );
delay (400);




}