unsigned char code number[10]={0x28,0xeb,0x32,0xa2,0xe1,
                               0xa4,0x24,0xea,0x20,0xa0}; // 0 1 2 3 4 5 6 7 8 9 

#define one P2_4
#define two P2_5
#define three P2_6
#define four P2_7
#define Port P0

unsigned char i;
void playdelay()
{
 for(i=0;i<250;i++);
}

display(unsigned int m)
{
 unsigned char x;
 one=1;two=1;three=1;four=1;
 x=m/1000;
 Port=number[x];
 one=0;
 playdelay();
 x=m%1000/100;
 Port=number[x];
 one=1;two=0;
 playdelay();
 x=m%100/10;
 Port=number[x];
 two=1;three=0;
 playdelay();
 x=m%10;
 Port=number[x];
 three=1;four=0;
 playdelay();
 four=1;

}