void setup() {
pinMode(2, OUTPUT); //a
pinMode(3, OUTPUT); //b
pinMode(4, OUTPUT); //c
pinMode(5, OUTPUT); //d
pinMode(6, OUTPUT); //e
pinMode(7, OUTPUT); //f
pinMode(8, OUTPUT); //g
pinMode(9, OUTPUT); //dg
}

void loop() {
digitalWrite(2, HIGH);  //a
digitalWrite(3, HIGH);  //b
digitalWrite(4, HIGH);  //c
digitalWrite(5, HIGH);  //d
digitalWrite(6, HIGH);  //e
digitalWrite(7, HIGH);  //f
digitalWrite(8, LOW);  //g
digitalWrite(9, LOW);  //dg
delay(1000);
digitalWrite(2, LOW);  //a
digitalWrite(3, LOW);  //b
digitalWrite(4, LOW);  //c
digitalWrite(5, LOW);  //d
digitalWrite(6, HIGH);  //e
digitalWrite(7, HIGH);  //f
digitalWrite(8, LOW);  //g
digitalWrite(9, LOW);  //dg
delay(1000);
digitalWrite(2, HIGH);  //a
digitalWrite(3, HIGH);  //b
digitalWrite(4, LOW);  //c
digitalWrite(5, HIGH);  //d
digitalWrite(6, HIGH);  //e
digitalWrite(7, LOW);  //f
digitalWrite(8, HIGH);  //g
digitalWrite(9, LOW);  //dg
delay(1000);
digitalWrite(2, HIGH);  //a
digitalWrite(3, HIGH);  //b
digitalWrite(4, HIGH);  //c
digitalWrite(5, HIGH);  //d
digitalWrite(6, LOW);  //e
digitalWrite(7, LOW);  //f
digitalWrite(8, HIGH);  //g
digitalWrite(9, LOW);  //dg
delay(1000);
digitalWrite(2, LOW);  //a
digitalWrite(3, HIGH);  //b
digitalWrite(4, HIGH);  //c
digitalWrite(5, LOW);  //d
digitalWrite(6, LOW);  //e
digitalWrite(7, HIGH);  //f
digitalWrite(8, HIGH);  //g
digitalWrite(9, LOW);  //dg
delay(1000);
digitalWrite(2, HIGH);  //a
digitalWrite(3, LOW);  //b
digitalWrite(4, HIGH);  //c
digitalWrite(5, HIGH);  //d
digitalWrite(6, LOW);  //e
digitalWrite(7, HIGH);  //f
digitalWrite(8, HIGH);  //g
digitalWrite(9, LOW);  //dg
delay(1000);
digitalWrite(2, HIGH);  //a
digitalWrite(3, LOW);  //b
digitalWrite(4, HIGH);  //c
digitalWrite(5, HIGH);  //d
digitalWrite(6, HIGH);  //e
digitalWrite(7, HIGH);  //f
digitalWrite(8, HIGH);  //g
digitalWrite(9, LOW);  //dg
delay(1000);
digitalWrite(2, HIGH);  //a
digitalWrite(3, HIGH);  //b
digitalWrite(4, HIGH);  //c
digitalWrite(5, LOW);  //d
digitalWrite(6, LOW);  //e
digitalWrite(7, LOW);  //f
digitalWrite(8, LOW);  //g
digitalWrite(9, LOW);  //dg
delay(1000);
digitalWrite(2, HIGH);  //a
digitalWrite(3, HIGH);  //b
digitalWrite(4, HIGH);  //c
digitalWrite(5, HIGH);  //d
digitalWrite(6, HIGH);  //e
digitalWrite(7, HIGH);  //f
digitalWrite(8, HIGH);  //g
digitalWrite(9, LOW);  //dg
delay(1000);
digitalWrite(2, HIGH);  //a
digitalWrite(3, HIGH);  //b
digitalWrite(4, HIGH);  //c
digitalWrite(5, HIGH);  //d
digitalWrite(6, LOW);  //e
digitalWrite(7, HIGH);  //f
digitalWrite(8, HIGH);  //g
digitalWrite(9, LOW);  //dg
delay(1000);
}