int datapin = 2; 
int clockpin = 3;
int latchpin = 4;

byte data[10] = { //定义一个数组用来写0123456789
// a, b, c, d, e, f, g，h.
 0b00000011, // 0
 0b10011111, // 1
 0b00100101, // 2
 0b00001101, // 3
 0b10011001, // 4
 0b01001001, // 5
 0b01000001, // 6
 0b00011111, // 7
 0b00000001, // 8  
 0b00001001  // 9  
};

void setup()
{
  // Set the three SPI pins to be outputs:

  pinMode(datapin, OUTPUT);
  pinMode(clockpin, OUTPUT);  
  pinMode(latchpin, OUTPUT);
}


void loop()
{
  for(int i=0;i<=9;i++){
     digitalWrite(latchpin,LOW);//准备接收数据
     shiftOut(datapin,clockpin,LSBFIRST,data[i]);
     digitalWrite(latchpin,HIGH);
     delay(1000);
  }

}