int setPins[] = {7,6,4,2,1,9,10,5};
byte digits[3][8]={{1,1,1,1,1,1,0,0},//数字0
                    {0,1,1,0,0,0,0,0},//数字1
                    {1,1,0,1,1,0,1,0} //数字2
                   };
void setup() {
  // put your setup code here, to run once:
  for(int i=0;i<8;i++)
  {
    pinMode(setPins[i],OUTPUT);        //端口初始化为输出
  }
 
  pinMode(3,OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
  digitalWrite(3,LOW);
  for(int n=0;n<=2;n++)
  {
      for(int j=0;j<8;j++)
    {
      digitalWrite(setPins[j],digits[n][j]);//按下按键开关1数码管显示1
    }
    delay(1000);
  }
  
}