13.c

刚学时编的小程序

#include<AT89X51.H>

#define uchar unsigned char;
#define uint unsigned int;

unsigned char code dis[]={0x3f,0x06,0x5b,0x4f,
0x66,0x6d,0x7d,0x07,
0x7f,0x6f,0x77,0x7c,
0x39,0x5e,0x79,0x71,0x00};

uchar disp[]={0xfe,0xfd,0xfb,0xf7,
0xef,0xdf,0xbf,0x7f};

uchar discnt,count0;count1,count2,tab[8]={0,0,0,0,0,0,0,0};


main()
{
	TMOD=0x12;
	TH0=7192;
	TL0=7192;
	TH1=(65536-50000)/256;
	TL1=(65536-50000)%256; 
	TR0=1;
	TR1=1;
	IT0=0;
	EA=1;
	ET1=1;
	ET0=1;
	EX0=1;
//	PT0=1;
//	PT1=1;
   	while(1)
	{
	  ;
	}
}
void t0(void) interrupt 1 using 0
{
	count0++;
	if(count0==5)
	{
		count0=0;
		P0=dis[tab[discnt]];
		P2=disp[discnt];
		discnt++;
		if(discnt==8)
		discnt=0;
	}
} 

void t1(void) interrupt 3 using 2
{
	count1++;
	if(count1>=100)
	{	
		count1=0;
	}
	TH1=(65536-50000)/256;
	TL1=(65536-50000)%256; 

}

void it1(void) interrupt 0 using 1
{
	count2++;
	if(count1==99)
	{
		tab[7]=count2/100;
		tab[6]=(count2%100)/10;
		tab[5]=count2%10;
		count2=0;
	}
}