//Header section
int LED1=0;
int LED2=1;
int LED3=2;
int LED4=3;
int LED5=4;
int LED6=5;
int LED7=6;
int buz=8;
void setup()
{
  pinMode(LED1, OUTPUT);
  pinMode(LED2, OUTPUT);
  pinMode(LED3, OUTPUT);
  pinMode(LED4, OUTPUT);
  pinMode(LED5, OUTPUT);
  pinMode(LED6, OUTPUT);
  pinMode(LED7, OUTPUT);
  

}

void loop()
{
  digitalWrite(LED1, LOW);
  digitalWrite(LED2, LOW);
  digitalWrite(LED3, LOW);
  digitalWrite(LED4, LOW);
  digitalWrite(LED5, LOW);
  digitalWrite(LED6, LOW);
  digitalWrite(LED7, LOW);
  delay(1000);
  digitalWrite(LED1, HIGH);
  tone(buz,240);
  delay(500);
  digitalWrite(LED2, HIGH);
  tone(buz,270);
  delay(500);
  digitalWrite(LED3, HIGH);
  tone(buz,300);
  delay(500);
  digitalWrite(LED4, HIGH);
  tone(buz,320);
  delay(500);
  digitalWrite(LED5, HIGH);
  tone(buz,360);
  delay(500);
  digitalWrite(LED6, HIGH);
  tone(buz,400);
  delay(500);
  digitalWrite(LED7, HIGH);
  tone(buz,450);
  delay(500);
  
  //delay(1000);
}