附录三、安装后的PCB实物图
安装后的PCB实物图
附录四、程序设计
#include<reg52.h> #define uint unsigned int #define uchar unsigned char
sbit BEEP=P3^1; sbit LED=P3^0; sbit IN=P1^0; sbit S1 = P3^2; sbit S2= P1^2; uchar num=0; uchar num1=0;
uchar baojing_flag=0;
void delayms(uint xms) { uint i,j; for(i=xms;i>0;i--)