/*
multi-line comments can go here in between
the symbols you see above and below
 */
int A = 5;
int B = 6;

// the setup function runs once when you press reset or power the board
void setup() {
  // initialize digital pin 13 as an output.
  pinMode(A, OUTPUT);
    pinMode(B, OUTPUT);

}

// the loop function runs over and over again forever
void loop() {
  digitalWrite(A, HIGH);
  delay(1000);
  digitalWrite(A, LOW);
  delay(1000);

 digitalWrite(B, HIGH);
  delay(1000);
  digitalWrite(B, LOW);
  delay(1000);              // 2 slashes allow a line of comment


}