//   x a b c d f g 
//0: 0 1 1 1 1 1 0  0x7E
//1: 0 0 1 1 0 0 0  0x30

//                0          1          2           3          4         5          6           7          8          9      
int digit[]={0b00111111,0b00000110,0b01011011,0b01001111,0b01100110,0b01101101,0b01111101,0b00000111,0b01111111,0b01101111};
int x = 0;




void setup() {
  // put your setup code here, to run once:
  //Serial.begin(115200);
  DDRD= 0xFF;
  PORTD = 1<<PD7;//PORTD |=0x80;
  randomSeed(analogRead(A0));
  x = random(1,10);
  
}
void loop(){
  // put your main code here, to run repeatedly:
  int k = digit[x];
pinMode(7, INPUT_PULLUP);
if(digitalRead(7)==LOW && x>0){
  x --;
  delay(300);
}

for (int x = 0;x<7;x++){
  int temp = k & 0x01;
  digitalWrite(x,temp);
  k=k>>1;
}
}

/*
void loop() {
  // put your main code here, to run repeatedly:
  bool vhod = PIND & 0x80;
  if(vhod == LOW){
    x--;
    delay(500);
    if(x<=0)x=0;
  }
  
  PORTD = digit[x] | 0x80;
  delay(500);
}
*/