int digit[]={0x86,0xDB, 0xCF, 0x66, 0xED,0xFD};
int pin[] ={0,1,2,3,4,5,6};
void setup() {
  randomSeed(analogRead(A0));
  for(int x=0;x<7;x++){
    pinMode(pin[x], OUTPUT);
  }
}

void loop() {
  //int stev = 0xFF;//digit[0]; //0x86
  int a = random(0,7);
  int stev=digit[a];

  for(int x =0; x<7; x++){
    int temp = stev & 0x01; 
    digitalWrite(pin[x],temp);
    stev = stev >> 1;
    
  }
  delay(500);
  for(int x =0; x<7; x++){
    int temp = stev & 0x01;
    digitalWrite(pin[x],LOW);
    //stev = stev >> 1;
    
  }
  delay(500);
}