26-2、单片机多个IO口输入检测实验.rar_26.2_AT89C51单片机 _按键检测_检测

#include<reg52.h> #include"hjc52.h" void main() { hjc52_init(); P1=0xff; while(1) { LED0=K1; LED1=K2; LED2=K3; LED3=K4; //以下为HJ-C52增强型语句 LED4=K5; LED5=K6; LED6=K7; LED7=K8; //K1=1;//松开时高电平 1 //K1=0; //按下时低电平0 } }