int serPin = 9;
int serClockPin = 8;
int latchClockPin = 7;

byte number_values[] = {252, 96, 218, 242, 102, 182, 190, 224, 254, 246};


//  0b11111100,0b01100000, 0b11011010, 0b11110010, 0b01100110, 0b10110110, 0b10111110, 0b11100000, 0b11111110, 0b11110110]


void setup() {
  pinMode(serPin, OUTPUT);
  pinMode(serClockPin, OUTPUT);
  pinMode(latchClockPin, OUTPUT);
}

void loop() {
  for (int i=0; i<100; i++)
  {
    int digit_tens = i / 10;
    int digit_units = i - (digit_tens * 10);
    shift_byte (number_values[digit_units]);
    shift_byte (number_values[digit_tens]);
    register_update();
    delay (500);
  }
}


void shift_bit (byte bit_value) {
  digitalWrite(serPin, bit_value);
  digitalWrite(serClockPin, HIGH);
  delay (1);
  digitalWrite(serClockPin, LOW);
}

void register_update (){
  digitalWrite(latchClockPin, HIGH);
  delay (1);
  digitalWrite(latchClockPin, LOW);
}

void shift_byte (byte byte_value){
  boolean bit_value;

  for (int i=0; i<8; i++) {
    bit_value = byte_value & 1;
    shift_bit (bit_value);
    byte_value >>= 1;
  }
}