// by Nissanka MD Weerasinghe SLCOTM

void setup() {
 for(int i = 2; i<9;i++)
 {
  pinMode(i, OUTPUT);
  digitalWrite(i, HIGH);
  delay(200);
 }

 delay(1500);

  for(int i = 2; i<9;i++)
 {

  digitalWrite(i, 0);
 }


}

void loop() {

SSD1();
delay(1000);
SSD2();
delay(1000);
SSD3();
delay(1000);
SSD4();
delay(1000);


}


void SSD1()
{
  //erase display (turn off All segments)
  for(int i = 2; i<9;i++) digitalWrite(i, 0);

  // Display 1

  digitalWrite(3,1);
  digitalWrite(4,1);



}

void SSD2()
{
    //erase display (turn off All segments)
  for(int i = 2; i<9;i++) digitalWrite(i, 0);


  //Display 2 (abdeg)
  digitalWrite(2,1);
  digitalWrite(3,1);
  digitalWrite(5,1);
  digitalWrite(6,1);
  digitalWrite(8,1);

}


void SSD3()
{
    //erase display (turn off All segments)
  for(int i = 2; i<9;i++) digitalWrite(i, 0);


  //Display 2 (abdeg)
  digitalWrite(2,1);
  digitalWrite(3,1);
  digitalWrite(4,1);
  digitalWrite(5,1);
  digitalWrite(8,1);


}

void SSD4()
{
    //erase display (turn off All segments)
  for(int i = 2; i<9;i++) digitalWrite(i, 0);


  //Display 2 (abdeg)
  digitalWrite(3,1);
  digitalWrite(4,1);
  digitalWrite(8,1);
  digitalWrite(7,1);


}