K1-K4 键状态显示51单片机PROTEUS仿真-12.rar

#include <reg52.h> #define uchar unsigned char #define uint unsigned int sbit LED1 = P0^0; sbit LED2 = P0^1; sbit LED3 = P0^2; sbit LED4 = P0^3; sbit K1 = P1^0; sbit K2 = P1^1; sbit K3 = P1^2; sbit K4 = P1^3; void DelayMS(uint x) { uchar t; while(x--) { for(t=120;t>0;t--); } } void main() { P0=0xff; P1=0xff; while(1) { LED1 = K1; LED2 = K2; if(K3==0) { while(K3==0) { LED3=~LED3; } } if(K4==0) { while(K4==0) { LED4=~LED4; } } DelayMS(10); } }