const byte pinArray[8] = { 17, 25, 26, 14, 13, 16, 15, 27 };
const byte digitals[11][8] = {
  // {a,b,c,d,e,f,g,h}
  { 1, 1, 1, 1, 1, 1, 0, 0 },  //0
  { 0, 1, 1, 0, 0, 0, 0, 0 },  //1
  { 1, 1, 0, 1, 1, 0, 1, 0 },  //2
  { 1, 1, 1, 1, 0, 0, 1, 0 },  //3
  { 0, 1, 1, 0, 0, 1, 1, 0 },  //4
  { 1, 0, 1, 1, 0, 1, 1, 0 },  //5
  { 1, 0, 1, 1, 1, 1, 1, 0 },  //6
  { 1, 1, 1, 0, 0, 0, 0, 0 },  //7
  { 1, 1, 1, 1, 1, 1, 1, 0 },  //8
  { 1, 1, 1, 1, 0, 1, 1, 0 },  //9
  { 0, 0, 0, 0, 0, 0, 0, 1 },  //.
};
void setup() {
  // put your setup code here, to run once:
  for (int i = 0; i < sizeof(pinArray) / sizeof(pinArray[0]); i++) {
    pinMode(pinArray[i], OUTPUT);
  }
}

void loop() {
  // put your main code here, to run repeatedly:
  for (int i = 0; i <= 10; i++) {
    displayNum(i, 800);
  }
}
void displayNum(int num, int delayTime) {
  for (int i = 0; i < 8; i++) {
    digitalWrite(pinArray[i], !digitals[num][i]);
  }
  delay(delayTime);
}