int seg[7] = {PA0,PA1,PA2,PA3,PA4,PA5, PA6};


int num [10][7] = {
  {0,0,0,0,0,0,1}, // 0
  {1,0,0,1,1,1,1}, // 1
  {0,0,1,0,0,1,0}, // 2
  {0,0,0,0,1,1,0}, // 3
  {1,0,0,1,1,0,0}, // 4
  {0,1,0,0,1,0,0}, // 5
  {0,1,0,0,0,0,0}, // 6
  {0,0,0,1,1,1,1}, // 7
  {0,0,0,0,0,0,0}, // 8
  {0,0,0,0,1,0,0}  // 9
  
};
#define A1 PB8
#define A2 PB7
void setup() {
  
  {
  for (int i = 0; i < 7; i++) {
    pinMode(seg[i], OUTPUT);
    
  }
  //pinMode(RELAY, OUTPUT);
  pinMode(A1, OUTPUT);
  pinMode(A2, OUTPUT);
}}

void backward() {                        
  
 
  for (int n = 9; n >= 0; n--) {
    for (int j = 9; j >= 0; j--) { 

      for (int i = 0; i < 7; i++) {
        digitalWrite(seg[i], num[n][i]);
        digitalWrite(A1, HIGH);
        delay(1000);
        digitalWrite(A2, LOW);
        delay(100);
      }
      
      
      for (int i = 0; i < 7; i++) {
        digitalWrite(seg[i], num[j][i]);
        digitalWrite(A1, LOW);
        delay(1000);
        digitalWrite(A2, HIGH);
        delay(100);
      }
      

  delay(1000); 
    }}}
  
  void forward(){
  for (int n = 0; n < 10; n++) {
    for (int j = 0; j < 10; j++) { 
     
      for (int i = 0; i < 7; i++) {
        digitalWrite(seg[i], num[n][i]);
        digitalWrite(A1, HIGH);
        delay(1000);
        digitalWrite(A2, LOW);
        delay(100);
      }
      
     
      for (int i = 0; i < 7; i++) {
        digitalWrite(seg[i], num[j][i]);
        digitalWrite(A1,LOW);
        delay(1000);
        digitalWrite(A2, HIGH);
        delay(100);
      }
      
      
      //digitalWrite(RELAY, LOW);
      
      delay(1000); 
    }
  }
  
  delay(2000); 
}
void loop()
{
  forward();
  delay(500);
  backward();
}