#include<reg52.h>
#define uint unsigned int
#define uchar unsigned char
uchar code temp[]={0x80,0xe3,0x44,0x41,0x23,0x11,0x10,0xc3,0x00,0x01};//數碼管由0~9的顯示
char code b[]={0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f,0xbf,0xdf,0xef,0xf7,0xfb,0xfd,0xfe,
0xfc,0xf8,0xf0,0xe0,0xc0,0x80,0x00,0x01,0x03,0x07,0x0f,0x1f,0x3f,0x7f,0xff,
0x7f,0x3f,0x1f,0x0f,0x07,0x03,0x01,0x00};//流水燈先是逐個閃動，后反向閃動，再全部閃動，再反向全部閃動。
void delay(uint time)//延時函數
{

while(time--);
}

void main() //主函數
{
uint k,l;
uchar i,j;
j=0;
while(1)
{
for(i=0;i<10;i++)
{
P1=temp;
P2=b[j]; 
for(l=0;l<100;l++)
for(k=0;k<5;k++)
delay(10);
j++;
if(j==38)j=0;

}
}
}
缺點：單片機兩個IO口不能同時獨立工作！  

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