// segment cathodes
int a = 2;
int b = 3;
int c = 4;
int d = 5;
int e = 6;
int f = 7;
int g = 8;
// digit anodes (driven by PNP transistors)
int one = 9;
int ten = 10;
int hund = 11;
int thou = 12;
int tetho = 13;
int hutho = A1;
// <ignore these names>
unsigned long num = 0;
unsigned int cislo = 0;
unsigned int cislodesat = 0;
unsigned int cislosto = 0;
unsigned int cislotisic = 0;
unsigned int cislodesattisic = 0;
unsigned int cislostotisic = 0;
// </ignore these names>
unsigned long myTime = 0;
int position[6];                                  // converted value
int digit_pin[] {9, 10, 11, 12, 13, 14};          // Digit pins
//--------------------------------------------------------------
void setup() {
  for (int x = 2; x < 15; x++) {                    // Define mode pins as OUTUT
    pinMode(x, OUTPUT);
  }
  // digit anodes are driven by PNP transistors   // HIGH all Pins
  for (int y = 2; y < 15; y++) {
    digitalWrite(y, HIGH);
  }
}
//-------------------------------------------------------------
void loop() {
  if (millis() - myTime >= 400) {               // Time to increment num
    num++;                                      // Increment num
    myTime = millis();                          // Refresh myTime
    cislo = num % 10;                           // Module num  calculet unit
    converter(0, cislo );                       // Call convert to convert 7 seg pins
    cislodesat = (num / 10) % 10;               // module num/10 ten
    converter(1, cislodesat );                  // Call convert to convert 7 seg pins
    cislosto = (num / 100) % 10;                // module num/10 hundred
    converter(2, cislosto );                    // Call convert to convert 7 seg pins
    cislotisic = (num / 1000) % 10;             // module num/10 thousand
    converter(3, cislotisic );                  // Call convert to convert 7 seg pins
    cislodesattisic = (num / 10000) % 10;       // module num/10 million
    converter(4, cislodesattisic );             // Call convert to convert 7 seg pins
    cislostotisic = (num / 100000) % 10;        // module num/10 Billion
    converter(5, cislostotisic );               // Call convert to convert 7 seg pins
  }
  for (int k = 0; k < 6; k++) {                 // Turn on/off 7seg pins by convert
    int p = 2;
    for (int t = 6; t >= 0; t--) {             // turn on/off pins (2 to 8)
      digitalWrite(p, bitRead(position[k], t));
      p++;                                       // increment pin number
    }
    digitalWrite(digit_pin[k], !LOW);           // define digit pin turn LOW
    for (int m = 9; m < 15; m++) {
      digitalWrite(m, !HIGH);                    // Turn all pin HIGH
    }
  }
}
//------------------------------------------------------------------
void converter(int j, int newNum ) {
  // Serial.print(newNum); Serial.print(" ");
  if (newNum == 0) position[j] = 0x01;     // 00 = 01
  if (newNum == 1) position[j] = 0x4F;     // 01 = 4F
  if (newNum == 2) position[j] = 0x12;     // 02 = 12
  if (newNum == 3) position[j] = 0x06;     // 03 = 06
  if (newNum == 4) position[j] = 0x4C;     // 04 = 4C
  if (newNum == 5) position[j] = 0x24;     // 05 = 24
  if (newNum == 6) position[j] = 0x20;     // 06 = 20
  if (newNum == 7) position[j] = 0x0F;     // 07 = 0F
  if (newNum == 8) position[j] = 0x00;     // 08 = 00
  if (newNum == 9) position[j] = 0x04;     // 09 = 04
  //  Serial.print(position[j],HEX); Serial.println(" ");
}