mima.zip_基于AT89C51的_密码锁 仿真

/*******************AT89C51&&LCD1602应用电路*********************************/ /********密码锁***********/ #include<reg51.h> #include<lcd1602.c> #include<string.h> sbit LED=P3^0; unsigned char mima[6]={2,6,3,7,1,9}; //定义初始密码 unsigned char num[6]; unsigned int j=0,k=0,n=6,m=0,key; void display(unsigned int input); void delay1(); void main() { LED=0; LCD_Initial(); GotoXY(0,0); Print("Input"); /****************键盘扫描程序***********************/ while(1) { P1=0xff; P1=0x70; key=P1; key=key&0xf0; delay(10); if(key!=0x70) { if(key==0x30) { P1=0xff; P1=0x0f; key=P1; key=key&0x0f; delay(10); switch(key) { case 0x0e:num[j]='*'; break; case 0x0d:num[j]=7;break; case 0x0b:num[j]=4;break; case 0x07:num[j]=1; break; default:break; } } if(P1==0x50) { P1=0xff; P1=0x0f; key=P1; key=key&0x0f; delay(10); switch(key) { case 0x0e:num[j]=0; break; case 0x0d:num[j]=8;break; case 0x0b:num[j]=5;break; case 0x07:num[j]=2; break; default:break; } } if(P1==0x60) { P1=0xff; P1=0x0f; key=P1; key=key&0x0f; delay(10); switch(key) { case 0x0e:num[j]='#'; break; case 0x0d:num[j]=9;break; case 0x0b:num[j]=6;break; case 0x07:num[j]=3; break; default:break; } } display(num[j]); } } } /***************显示程序******************/ /***************密码判断程序******************/ void display(unsigned int input) { if(n<12) { GotoXY(n,0); Print("*"); GotoXY(n,1); LCD_Write(1,input+0x30); delay(20000); delay(20000);} n++;j++; if(n==12) { if(strcmp(num,mima)==0) //判断输入的密码是否正确 { LCD_Initial(); GotoXY(0,0); Print("O K"); //输入正确屏幕显示OK } else { LCD_Initial(); GotoXY(0,0); Print("Fault"); //输入错误请重新输入 delay(20000); delay(20000); delay(20000); delay(20000); delay(20000); n=6;j=0; LCD_Initial(); GotoXY(0,0); Print("Input");k++; } if(k==3) //输入三次错误等待5s重新输入 { GotoXY(0,0); Print("Please wite 5s"); delay1(); n=6;j=0;m++;k=0; LCD_Initial(); GotoXY(0,0); Print("Input"); } if(m==2) //总计输入错误6次屏幕回到初始化，LED灯闪烁报警。 { LCD_Initial(); while(1) {LED=1; delay(2000);LED=0;delay(2000);}} } } void delay1() { int t,h,s; for(s=0;s<=5;s++) {for(t=0;t<155;t++) for(h=0;h<1000;h++);} }