电子密码锁的主要功能。
(1)共8位密码,每位的取值范围为1~8。
(2)用户可以自行设定和修改密码。
(3)按每个密码键时都有声、光提示。
(4)若键入的8位开锁密码不完全正确,则报警5秒钟,以提醒他人注意。
(5)开锁密码错3次要报警10分钟,报警期间输入密码无效,以防窃贼多次试探密码。
(6)键入的8位开锁密码完全正确才能开锁,开锁时要有1秒的提示音。
(7)密码键盘上只允许有8个密码按键和1个发光管。锁内有备用电池,只有内部上电复位时才能设置或修改密码,因此,仅在门外按键是不能修改或设置密码的。
(8)密码设定完毕后要有2秒的提示音。
单片机源程序如下:
- #include"at89x51.h"
- #include"key.h"
- #include"lcd.h"
- uchar code show_0[]="Please input the password:";
- uchar code show_1[]="The cipher is:" ;
- uchar code show_2[]="********";
- uchar code show_3[]="The password is wrong!";
- uchar code show_4[]="This is the last time,";
- uchar code show_5[]="Please try it tomorrow!";
- uchar code show_6[]="you are right!";
- uchar code show_7[]="Please input the new cipher:";
- uchar code show_8[]="Input it again!";
- uchar code show_9[]="Establishes successful! ";
- uchar code show_10[]="(^_^)";
- uchar init_pswd[]={8,8,8,8,8,8,8,8};
- uchar pswd[8]={0};
- uchar pswd_1[8]={0};
- void play(uchar *j,uchar k) //K是显示的个数,j是地址
- {
- uchar i;
- for(i=0;i<k;i++)
- {
- dat_w(*(j+i));
- delay(20);
- }
- }
- main()
- {
- uchar j=0,i=0,sum_1=0;
- loop:init();
- clear();
- gotoxy(1,0);
- play(show_0,16);
- gotoxy(2,0);
- play(show_0+17,10);
- /****密码输入****/
- do
- {
- key();
- }
- while(ki!=15);
- clear();
- gotoxy(1,0);
- play(show_1,15);
- do
- {
- flag=0;
- key();
- gotoxy(2,0);
- if(flag==1&&ki<=9)
- {
- pswd[i]=ki;
- play(show_2,i);
- i++;
- }
- if(ki==14) //14则退出.
- break;
- }
- while(i<=8);
- for(i=0;i<=7;i++)
- {
- sum_1=init_pswd[i]-pswd[i]+sum_1;
- if(sum_1!=0)
- {
- clear();
- j++;
- if(j==3)
- {
- clear();
- gotoxy(1,0);
- play(show_4,16);
- gotoxy(2,0);
- play(show_4+16,14);
- delay(500);
- delay(500);
- clear();
- gotoxy(1,0);
- play(show_5+7,16);
- gotoxy(2,5);
- play(show_10,5);
- while(1); //三次输入密码失败,自锁
- }
- gotoxy(1,0);
- play(show_3,16);
- gotoxy(2,5);
- play(show_3+15,7);
- delay(500);
- clear();
- gotoxy(1,0);
- play(show_8,15);
- goto loop;
- }
- if(sum_1==0)
- {
-
- clear();
- gotoxy(1,0);
- play(show_6,15);
- do
- {
- key();
- }
- while(ki!=13);
- loop1:clear();
- gotoxy(1,0);
- play(show_7,13);
- gotoxy(2,0);
- play(show_7+13,15);
- /****第一次输密码***/
- i=0;
- do
- {
- flag=0;
- key();
- if(flag==1&&ki<=9)
- {
- pswd[i]=ki;
- i++;
- clear();
- gotoxy(1,0);
- play(show_2,i);
- }
- }while(i<=7);
- clear();
- gotoxy(1,0);
- play(show_8,15);
- /***第二次输密码****/
- i=0;
- sum_1=0;
- do
- {
- flag=0;
- key();
- if(flag==1&&ki<=9)
- {
- pswd_1[i]=ki;
- i++;
- clear();
- gotoxy(1,0);
- play(show_2,i);
- }
- }
- while(i<=7);
- for(i=0;i<=7;i++)
- {
- sum_1=sum_1+ pswd_1[i]-pswd[i];
- }
- if(sum_1==0)
- {
- clear();
- gotoxy(1,2);
- play(show_9,12);
- gotoxy(2,2);
- play(show_9+13,11);
- for(i=0;i<=7;i++)
- {
- init_pswd[i]=pswd[1];
- }
- while(1);
- }
- if(sum_1!=0)
- {
- clear();
- goto loop1;
- }
- }
- }
-
-
- }
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