#include

#include

#define LED P0

sbit K=P1^0;

unsigned char KEY=0;

void Delay(unsigned int n)

{

unsigned char a,b;

for(;n>0;n--)

{

for(b=1;b>0;b--)

for(a=22;a>0;a--);

}

}

void Intconfiguration(void)

{

IT0=1;

EX0=1;

EA=1;

}

void Int() interrupt 0

{

Delay(1);

if(K==0)

{

KEY=1;

}

}

void main()

{

LED=0xfe;

Intconfiguration();

while(1) {

if(KEY==1)

{

LED=_cror_(LED,1);

}

if(KEY==0)

{

LED=_crol_(LED,1);

}

Delay(2000);

}

}