//void setup() 
//{
//pinMode(8,OUTPUT);
//}
//void loop() 
//{
//digitalWrite(8, HIGH);
//delay(1000);
//digitalWrite(8, LOW);
//delay(1000);
//}
const int ledPin = 8;
void setup() 
{
  pinMode(ledPin, OUTPUT); 
}
void loop() 
{
  digitalWrite(ledPin, 1); 
  delay(1000);                 
  digitalWrite(ledPin, 0);  
  delay(1000);                 
}