博客

##原路图

##//源码

#include <reg52.h>
#include <stdlib.h>
#define uint unsigned long
#define uchar unsigned char	
sbit N1 = P1^0;	
sbit N2 = P1^1;
sbit N3 = P1^2;
sbit N4 = P1^3;
sbit N5 = P1^4;
sbit N6 = P1^5;
uchar code table[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90}; 

uint num;
int a,t1=0;

void delayms(uint xms)	//延时函数
{		
	uint i,j;
	for(i=xms;i>0;i--)
		for(j=10;j>0;j--);
}
	
void display(uint num)						  
{
		N1=0;		
		P0=table[(num%1000000)/100000];	
		delayms(1);		
		P0=0XFF;		
		N1=1;		

		N2=0;		
		P0=table[(num%100000)/10000];	
		delayms(1);		
		P0=0XFF;		
		N2=1;

		N3=0;		
		P0=table[(num%10000)/1000];	
		delayms(1);		
		P0=0XFF;		
		N3=1;		

		N4=0;		
		P0=table[(num%1000)/100];	
		delayms(1);		
		P0=0XFF;		
		N4=1;

		N5=0;		
		P0=table[(num%100)/10];	
		delayms(1);		
		P0=0XFF;		
		N5=1;		

		N6=0;		
		P0=table[num%10];	
		delayms(1);		
		P0=0XFF;		
		N6=1;

		}

void TimeAdd() interrupt 1
{

		TH0=(65536-50000)/256;	
		TL0=(65536-50000)%256;
		t1++;
		
		if(t1==10)	//20*50==1秒10*50=0.5秒
		{
			t1=0;
			num++;
		}
						
}




void main()
{
	TMOD=0X01;	// 定时器	初始化
	TH0=(65536-50000)/256;	
	TL0=(65536-50000)%256;
	EA=1;		//中断总开关
	ET0=1;		//开定时器0 中断
	TR0=1;		//启动定时器0
	 
	num=600000;		//初始值
	while(1)
	{							
		display(num);
		
	}