030、位定义的输入输出控制

张衍波

#include "reg52.h"
sbit P1_0=P1^0;
sbit P1_1=P1^1;
sbit P1_2=P1^2;
sbit P1_3=P1^3;

sbit P0_0=P0^0;
sbit P0_1=P0^1;
sbit P0_2=P0^2;
sbit P0_3=P0^3;
void main()
{

while(1)//无限循环
  {
   if(P1_0==0)P0_0=0;
   if(P1_1==0)P0_1=0;
   if(P1_2==0)P0_2=0;
   if(P1_3==0)P0_3=0;
  }
}