/*名称：INT0及INT1中断计数

说明：每次按下第1个计数键时，

第1组计数值累加并显示在右边3只数

码管上，每次按下第2个计数键时，第

2组计数值累加并显示在左边3只数码管上，后两个按键分别清零。

*/

#include<reg51.h>

#defineucharunsignedchar

#defineuintunsignedint

sbitK3=P3^4;//2个清零键

sbitK4=P3^5;

//数码管段码与位码

ucharcodeDSY_CODE[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0xff};

ucharcodeDSY_Scan_Bits[]={0x20,0x10,0x08,0x04,0x02,0x01};

//2组计数的显示缓冲，前3位一组，后3位一组

uchardataBuffer_Counts[]={0,0,0,0,0,0};

uintCount_A,Count_B=0;

//延时

voidDelayMS(uintx)

{

uchart;

while(x--)for(t=0;t<120;t++);

}

//数据显示

voidShow_Counts()

{

uchari;

Buffer_Counts[2]=Count_A/100;

Buffer_Counts[1]=Count_A%100/10;

Buffer_Counts[0]=Count_A%10;

{

if(Buffer_Counts[2]==0)

Buffer_Counts[2]=0x0a;

if(Buffer_Counts[1]==0)

}

Buffer_Counts[1]=0x0a;

Buffer_Counts[5]=Count_B/100;

Buffer_Counts[4]=Count_B%100/10;

Buffer_Counts[3]=Count_B%10;

if(Buffer_Counts[5]==0)

{

Buffer_Counts[5]=0x0a;

if(Buffer_Counts[4]==0)

Buffer_Counts[4]=0x0a;

}

for(i=0;i<6;i++)

{

P2=DSY_Scan_Bits[i];

P1=DSY_CODE[Buffer_Counts[i]];

DelayMS(1);

}

}

//主程序

voidmain()

{

IE=0x85;

PX0=1;中断优先

IT0=1;

IT1=1;

while(1)

{

if(K3==0)Count_A=0;

if(K4==0)Count_B=0;

Show_Counts();

}

}

//INT0中断函数

voidEX_INT0()interrupt0

{

Count_A++;

}

//INT1中断函数

voidEX_INT1()interrupt2

{

Count_B++;

}