12K1-K4 按键状态显示

1、#include <reg52.h>#define uchar unsigned char#define uint uns足毂忍珩igned intsbit k1=P1^0;sbit k2=P1^1;sbit k3=P1^2;sbit k4=P1^3;sbit led1=P0^0;sbit led2=P0^1;sbit led3=P0^2;sbit led4=P0^3;void delayms(uint z){ uint x,y; for(x=z;x>0;x--) for(y=110;y>0;y--);}void main(){ while(1) { if(k1==0) { delayms(5); led1=0; if(k1==1) { delayms(5); led1=1; } } if(k2==0) { delayms(5); led2=0; if(k2==1) { delayms(5); led2=1; } } if(k3==0) { delayms(5); if(k3==1) { delayms(5); led3=~led3; } } if(k4==0) { delayms(5); if(k4==1) { delayms(5); led4=~led4; } } }}