// Professor: Christian Bodington E. 
  // www.conexionelectronica.com

  // Exercise # 1-4: Handling I/O ports.

  int sensorPin = A0;	// select the input pin for the potentiometer
  int sensorValue = 0;  // variable to store the value coming from the sensor
  
void setup() {

  // Initialize the digital pins as an output.

  DDRD = B11111111;  // sets Arduino pins 0 to 7 as outputs

  }

  // the loop routine runs over and over again forever:

void loop() {

	// read the value from the sensor:
	sensorValue = analogRead(sensorPin);
	
	PORTD = sensorValue;
	delay(1000);
  
 }