单片机 数码管0~F显示

#include <reg51.h>
#define GPIO_DIG   P0	//段选
#define GPIO_PLACE P1	//位选
#define uint unsigned int

unsigned char code DIG_PLACE[] = {0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f}; //位选
unsigned char code DIG_CODE[] = {0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71};
//0,1,2,3,4,5,6,7,8,9,A,b,C,d,E,F
unsigned char DisplayData[16];

void delay(uint z)      //delay 1ms
{
uint x,y;
for(x=z;x>0;x--)
{
for(y=124;y>0;y--);
}
}

void DigDisplay()
{
unsigned char i;
unsigned int j;

for(i=0; i<16; i++)
{
GPIO_PLACE = DIG_PLACE[i];
GPIO_DIG = DisplayData[i];
delay(500);
j = 10;			      //扫描时间
while(j--);

GPIO_DIG = 0x00;  //清残影

}
}

void main(void)
{
unsigned char i;

for(i=0; i<16; i++)
{
DisplayData[i] = DIG_CODE[i];
}

while(1)
{
DigDisplay();

}
}