text1.c

８９s52的最小系统及亮灯系统,按下相就原按钮就要以亮灯

#include <AT89X51.H>
#define uchar unsigned char

sbit K1=P3^0;
sbit K2=P3^1;
sbit K3=P3^2;

sbit L1=P1^0;
sbit L2=P1^1;
sbit L3=P1^2;
uchar s;

void main(void)
{
 while(1)
 {



	if(K1==0)
	{
	L1=0; //灯亮
	L2=1;
	L3=1;

	}
	else if (K2==0)
	{
	  L1=1; //灯灭
      L2=0;
	  L3=1;
	  s=s+"1";
	} else if (K3==0)
	{
	  L1=1; //灯灭
      L2=1;
	  L3=0;
	  s=s+"2";
	} else
	{
	  L1=1; //灯灭
      L2=1;
	  L3=1;
	  s=s+"3";
	} 
    

 }
}