exer11

/*
exercise 1.1 - using the 'for' command in exercise 0.1
 Created 02/04/2010 ---  CC by-sa v3.0 Share the love! - By John Boxall --- http://tronixstuff.com
 Based on an orginal by H. Barragan for the Wiring i/o board
 */

int del=100; // sets a default delay time, 1000 milliseconds (one second)
void setup()
{
  // initialize the digital pins as outputs:
  for (int i = 2; i<=9 ; i++)
  {
    pinMode(i, OUTPUT);
  } // end of for loop
} // end of setup
void loop()
{
  for (int i = 2; i<=9; i++) // blink from LEDs 2 to 9
  {
    digitalWrite(i, HIGH);
    delay(del);
    digitalWrite(i, LOW);
  }
  for (int i = 8; i>=3; i--) // blink from LEDs 8 to 3
  {
    digitalWrite(i, HIGH);
    delay(del);
    digitalWrite(i, LOW);
  }
}