秒表.c

单片机C源程序+HEX文件。配合实验板。需要的话加Q:394011495.并注明。

#include<reg52.h>
#define uchar unsigned char
#define uint unsigned int
sbit rclk=P1^4;
sbit srclk=P1^7;
sbit ser=P1^5;
uint duanum[8],wei[]={0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f},
	  duantable[10]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};
long a,count,number,weinum,duanxuan;
uchar k,i;
void init()
{
	EA=1;
	ET0=1;
	TMOD=0x01;
	TR0=1;
	TH0=(65536-10000)/256;
	TL0=(65536-10000)%256;
}
void counter(long num)
{
	duanum[7]=num/10000000;
	duanum[6]=num%10000000/1000000;
	duanum[5]=num%1000000/100000;
	duanum[4]=num%100000/10000;
	duanum[3]=num%10000/1000;
	duanum[2]=num%1000/100;
	duanum[1]=num%100/10;
	duanum[0]=num%10;	
} 
void display()
{	
	a=duanum[duanxuan];
	k=wei[weinum];
	for(i=0;i<8;i++)
	{
		srclk=0;
		k=k<<1;
		ser=CY;
		srclk=1;
	}
	k=duantable[a];
	for(i=0;i<8;i++)
	{
		srclk=0;
		k=k<<1;
		ser=CY;
		srclk=1;
	}
	rclk=0;
	rclk=1;
	weinum++;
	duanxuan++;
}



void main()
{
	init();
	while(1)
	{
		if(duanxuan==8)
			duanxuan=0;
		if(weinum==8)
			weinum=0;

		if(count==10)
		{
			count=0;
			number++;
		}

		counter(number);
		display();	
	}	
}

void time() interrupt 1
{
	TH0=(65536-10000)/256;
	TL0=(65536-10000)%256;
	count++;		
}