51单片机用中断实现流水灯，数码管和点阵同时显示

小白自备笔记···
····
数码管1S左移，6位数码管从999999每一秒钟减一倒着计数，点阵9-0倒计时显示。

#include	     //头文件
#include		  //库函数头文件
#define uint unsigned int	  //宏定义
#define uchar unsigned char	
#define ulong unsigned long 
uchar flag=0;	  //定义变量
static uint index=0;
sbit LED=P0^0;
sbit ADDR0=P1^0;     //位声明
sbit ADDR1=P1^1;	
sbit ADDR2=P1^2;				  
sbit ADDR3=P1^3;
sbit ENLED=P1^4;
uchar code ledchar[]={0xC0,0xF9,0xA4,0xB0,0x99,0x92,0x82,0xF8,
0x80,0x90,0x88,0x83,0xC6,0xA1,0x86,0x8E};  //数码管真值表
uchar ledbuff[7]={0xff,0xff,0xff,0xff,0xff,0xff,0xff};
uchar code image[10][8]={0xFF,0xC3,0xDB,0xDB,0xC3,0xDF,0xC3,0xFF,	//9
								0xFF,0xC3,0xDB,0xC3,0xDB,0xDB,0xC3,0xFF,
								0xFF,0xC3,0xDF,0xEF,0xF7,0xF7,0xF7,0xFF,
								0xFF,0xC3,0xFB,0xC3,0xDB,0xDB,0xC3,0xFF,
								0xFF,0xC3,0xFB,0xC3,0xDF,0xDF,0xC3,0xFF,
								0xEF,0xE7,0xEB,0xED,0x81,0xEF,0xEF,0xFF,
								0xFF,0xC3,0xDF,0xC3,0xDF,0xDF,0xC3,0xFF,
								0xFF,0xC3,0xDF,0xDF,0xC3,0xFB,0xC3,0xFF,
								0xFF,0xF3,0xF7,0xF7,0xF7,0xF7,0xE3,0xFF,
								0xFF,0xE7,0xDB,0xDB,0xDB,0xDB,0xE7,0xFF};
void main()
{	
 	static uchar j=0;
	ulong   sec=999999;
	EA=1;				//使能总中断
	ENLED=0;	   //74HC138的4、5脚低电平有效	
	TMOD=0x10;
	TH1=0xFC;
	TL1=0x67;//定时一毫秒
	ET1=1;
	TR1=1;
	while(1)
	{
		if(flag==1)		 //判断一秒定时标志
		{
		
				flag=0;	  //S秒定时清0标志
				sec--;		  //秒定时加1
				ledbuff[0]=ledchar[sec%10];
				ledbuff[1]=ledchar[sec/10%10];
				ledbuff[2]=ledchar[sec/100%10];
				ledbuff[3]=ledchar[sec/1000%10];
				ledbuff[4]=ledchar[sec/10000%10];
				ledbuff[5]=ledchar[sec/100000%10];
				ledbuff[6]=~(0x01<<j);
 				j++;
				 if(j>=8)
					{
						 j=0;
					 }
				 index++;
				 if(index>=10)
					 {
					 	index=0;
					 }
		}
	} 
		
}
void interruptT0() interrupt 3
{
	static uint cnt=0;
	static uchar i=0;
	TH1=0xFC;
	TL1=0x67;

		switch(i)
		{
			case 0 : ADDR3=1; ADDR2=0;ADDR1=0;ADDR0=0;i++;P0=ledbuff[0];break;	//数码管刷新
		
			case 1 :ADDR3=1; ADDR2=0;ADDR1=0;ADDR0=1;i++;P0=ledbuff[1];break;
		
			case 2 :ADDR3=1; ADDR2=0;ADDR1=1;ADDR0=0;i++;P0=ledbuff[2];break;
					    
			case 3 :ADDR3=1; ADDR2=0;ADDR1=1;ADDR0=1;i++;P0=ledbuff[3];break;
		
			case 4 :ADDR3=1; ADDR2=1;ADDR1=0;ADDR0=0;i++;P0=ledbuff[4];break;
		
			case 5 :ADDR3=1; ADDR2=1;ADDR1=0;ADDR0=1;i++;P0=ledbuff[5];break;  
			
			case 6:ADDR3=1; ADDR2=1;ADDR1=1;ADDR0=0;i++;P0=ledbuff[6];break;	 //led流水刷新

			case 7 : ADDR3=0; ADDR2=0;ADDR1=0;ADDR0=0;i++;P0=image[index][0];break;	   //点阵刷新
		
			case 8 :ADDR3=0; ADDR2=0;ADDR1=0;ADDR0=1;i++;P0=image[index][1];break;
		
			case 9 :ADDR3=0; ADDR2=0;ADDR1=1;ADDR0=0;i++;P0=image[index][2];break;
					    
			case 10 :ADDR3=0; ADDR2=0;ADDR1=1;ADDR0=1;i++;P0=image[index][3];break;
		
			case 11 :ADDR3=0; ADDR2=1;ADDR1=0;ADDR0=0;i++;P0=image[index][4];break;
		
			case 12 :ADDR3=0; ADDR2=1;ADDR1=0;ADDR0=1;i++;P0=image[index][5];break;  
			
			case 13:ADDR3=0; ADDR2=1;ADDR1=1;ADDR0=0;i++;P0=image[index][6];break;

			case 14:ADDR3=0; ADDR2=1;ADDR1=1;ADDR0=1;i=0;P0=image[index][7];break;

			default:break;
		} 
			cnt++;
	 		if(cnt>=1000)
			{
			cnt=0;
			flag=1;
			}
}