7-Segment Display Counter

byte pins[8] = {2,3,4,6,7,8,9}; // The digital pins that we are using
int duration = 1000; // The delay between the number changes

byte num0 = 0x3F;
byte num1 = 0x0C;
byte num2 = 0x5B;
byte num3 = 0x5E;
byte num4 = 0x6C;
byte num5 = 0x76;
byte num6 = 0x77;
byte num7 = 0x1C;
byte num8 = 0x7F;
byte num9 = 0x7E;

void printN(byte _digit) { // The function that prints the numbers
  for (int i = 0; i < 8; i++) {
    digitalWrite(pins[i], bitRead(_digit, i ));
  }
}

void setup() { // Our setup function, in which we initialise the above-mentioned pins
  for(int i = 0; i <= 9; i++) {
    pinMode(pins[i], OUTPUT);
  }
}

void loop() {
  printN(num0); delay(duration); // Basicly, what this line does: print 0 on the display then wait 1 second
  printN(num1); delay(duration);
  printN(num2); delay(duration);
  printN(num3); delay(duration);
  printN(num4); delay(duration);
  printN(num5); delay(duration);
  printN(num6); delay(duration);
  printN(num7); delay(duration);
  printN(num8); delay(duration);
  printN(num9); delay(duration);
}