#include<reg52.h>
#define uchar unsigned char
#define uint unsigned int

/*定义共阳极字符表即引脚*/
uchar code DSY_CODE[]={0Xc0,0xf9,0xa4,
0xb0,0x99,0x92,0x82,0xf8,0x80,0x90};
uchar code DSY_CODE1[]={0x40,0x79,0x24,
0x30,0x19,0x12,0x02,0x78,0x00,0x10};
sbit ST = P1^0;  //0809的各控制角
sbit EOC = P1^1;
sbit OE = P1^2;
sbit CLK = P1^3;

/*实现ms级延时*/
void DelayMS(uint ms)
{
    uchar i;
while(ms--)
for(i=0; i<114; i++);
}

/*数码管显示函数*/
void Display_Result(int d)
{
    long n;
	n=d*19.6;  //将0-255二进制按分辨率转换为十进制
	P2=0xff;  //关闭四位数码管
    P0=DSY_CODE[n%10];
    P2=0xfe;  //打开千分位
DelayMS(1);  //显示1ms
	P0=0xff;  //P0口置高电平避免误判
	P2=0xff;  //关闭所有数码管

    P0=DSY_CODE[n%100/10];
P2=0xfd;  //打开百分位
    DelayMS(1);
	P0=0xff;