int count=0;
const int segmentPins[8] = {2, 3, 4, 5, 6, 7, 8, 9};
int led1 = 10;
int led2 = 11;
const int code7seg[10] = {0xC0, 0xF9, 0xA4, 0xB0, 0x99, 0x92, 0x82, 0xF8, 0x80, 0x90};
unsigned long now = 0;

void setup() {
  // put your setup code here, to run once:
  for (int i=0; i<8; i++) {
    pinMode(segmentPins[i], OUTPUT);
    digitalWrite(segmentPins[i], HIGH);
  
  digitalWrite(led2, HIGH);
  }
}

void loop() {
  if (millis() - now > 1000) {
    now = millis();
    count ++;
  }
  digitalWrite(led1, HIGH);
  display(int(count / 10));
  digitalWrite(led1, LOW);
  for (int i = 0; i < 8; i ++) {
    digitalWrite(segmentPins[i], HIGH);
  }
  digitalWrite(led2, HIGH);
  display(int(count % 10));
  digitalWrite(led2, LOW);
  for (int i = 0; i < 8; i ++) {
    digitalWrite(segmentPins[i], HIGH);
  }
}

void display(int num) {
  boolean isBitSet; 
  int i = 0;
  for (i=0; i<8; i++) {
    isBitSet = bitRead(code7seg[num], i);
    Serial.println(isBitSet);
    digitalWrite(segmentPins[i], isBitSet);
  }
}