[51]简单按键计数程序

#include

unsigned int led[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0x88,0x83,0xc6,0xa1,0x86,0x8e}; 

unsigned char ID;

sbit k1 = P3^4;     

void delay(unsigned int xms)                                                                                                           //延时程序

{

    unsigned int x,y;

    for(x=xms;x>0;x--)

        for(y=110;y>0;y--);

}

void main()

{       

P2=0x07;

ID=0;

    while(1)

    {

        if(k1==0)

        {

            delay(100);          

            if(k1==0)        

            {

                ID++;

                while(!k1);   

            }

        }

    P0=led[ID];

    if(ID==10)ID=0;

    }

}