#define LED 10
#define led 5
void setup() {
pinMode(LED, OUTPUT);
pinMode(led, OUTPUT);
Serial.begin(9600);

}

void loop()
{
digitalWrite(LED, HIGH);
Serial.println("led1 is on");
digitalWrite(led, HIGH);
Serial.println("led2 is on");
delay(1000);
digitalWrite(LED, LOW);
Serial.println("led1 is off");
digitalWrite(led, LOW);
Serial.println("led2 is on");
delay(1000);
}