#include <REG51.H>
void delay(void);
sbit P2_0=P2^0;
sbit P3_2=P3^2;
int main(void)                                                                                    
{  
    char i;
    EA=1;//开总中断
    EX0=1;//开外中断0
    IT0=1;//触发方式下降沿
    char led[]={0xfc, 0x60, 0xda, 0xf2, 0x66, 0xb6, 0xbe, 0xe0, 0xfe};   
   
    delay();
         
    while(1)
    {
        for(i=0;i<9;++i)
        {
            P1=led[i];
                        
        }
   
    }
    return 0;   
}

void delay(void)
{    int j;
    for(j=100;j>0;--j);
}

void int0(void) interrupt 0
{
    P2_0=~P2_0;
    while(P3_2==0);

}

真的可以啊，，，