仿真電路圖：

部分源代碼：

#include

#define uchar unsigned char 

#define uint unsigned int

sbit lcdrs=P3^5;  

sbit lcden=P3^4;

sbit s1=P3^0;   

sbit s2=P3^1;

sbit s3=P3^2;

sbit s4=P3^3;

sbit beep=P2^2; 

sbit led=P2^3;  

uchar count,s1num,s4num;

char year,month,day,week,miao,shi,fen,pshi;

uchar code table[]=" 20  -  -   ";

void delay(uint z)  

{

uint x,y;

for(x=z;x>0;x--)

for(y=110;y>0;y--);

}

void zhuanhuan()

{

if(shi==0)

    pshi=12;

if(shi<=12&&shi>=1)

    pshi=shi;

    if(shi>12)

    pshi=shi-12;    

}        

void di()

{

beep=0;

delay(300);

beep=1;

delay(300);

}

void write_com(uchar com)

{

lcdrs=0;

lcden=0;

P0=com;

delay(5);

lcden=1;

delay(5);

lcden=0;

}

void write_date(uchar date)

{

lcdrs=1;

lcden=0;

P0=date;

delay(5);

lcden=1;

delay(5);

lcden=0;

}

void _shi()

{

   if(shi>=12)

   {

write_com(0x80+0x40+1);

write_date('P');

write_date('M');

   }

   else

   {

write_com(0x80+0x40+1);

write_date('A');

write_date('M');

   }

}

void write_ymd(uchar add1,uchar date1)

{

uchar shi,ge;

shi=date1/10;

ge=date1%10;

write_com(0x80+add1);

write_date(0x30+shi);

write_date(0x30+ge); 

}

void write_sfm(uchar add,uchar date)

{

uchar shi,ge;

shi=date/10;

ge=date%10;

write_com(0x80+0x40+add);

write_date(0x30+shi);

write_date(0x30+ge); 

}

void write_week(char week)   

{

write_com(0x80+12);

switch(week)

{

case 1: write_date('M');delay(5);

write_date('O');delay(5);

write_date('N');

break;

case 2: write_date('T');delay(5);

write_date('U');delay(5);

write_date('E');

break;

case 3: write_date('W');delay(5);

write_date('E');delay(5);

write_date('D');

break;

case 4: write_date('T');delay(5);

write_date('H');delay(5);

write_date('U');

break;

case 5: write_date('F');delay(5);

write_date('R');delay(5);

write_date('I');

break;

case 6: write_date('S');delay(5);

write_date('A');delay(5);

write_date('T');

break;

case 7: write_date('S');delay(5);

write_date('U');delay(5);

write_date('N');

break;

}

}

void writeym()

{

   day=1;

   month++;

   if(month==13)

   {

month=1;

year++;

if(year==100)

    year=0;

write_ymd(3,year);

}

write_ymd(6,month);

}

void init()

{

    uchar num;

lcden=0;

year=13;

month=6;

day=21;

week=5;

shi=13; 

fen=59;

miao=58;

count=0;

s1num=0;

s4num=0;

write_com(0x38);

write_com(0x0c);

write_com(0x06);

write_com(0x01);

write_com(0x80);

for(num=0;num<15;num++)

{

write_date(table[num]);

delay(5);

}

delay(5);

write_com(0x80+0x40+6);

write_date(':');

delay(5);

write_com(0x80+0x40+9);

write_date(':');

delay(5);

write_week(week);

write_ymd(3,year);

write_ymd(6,month);

write_ymd(9,day);

write_sfm(10,miao);

write_sfm(7,fen);

write_sfm(4,shi);

TMOD=0x01;

TH0=(65536-50000)/256;

TL0=(65536-50000)%256;

EA=1;

ET0=1;

TR0=1;

}

void keyscan()

{

if(s1==0)

{

delay(5);

if(s1==0)

{

    s1num++;

while(!s1);

if(s1num==1)

{

    TR0=0;  

write_com(0x80+3);

write_com(0x0f); 

}

if(s1num==2)

{

write_com(0x80+6);

}

if(s1num==3)

{

write_com(0x80+9);

}

if(s1num==4)

{

write_com(0x80+12);

}

if(s1num==7)

{

write_com(0x80+0x40+10);

}

if(s1num==6)

{

write_com(0x80+0x40+7);

}

if(s1num==5)

{

write_com(0x80+0x40+4);

}

if(s1num==8)

{

s1num=0;

write_com(0x0c);

TR0=1;

}

}

}

if(s1num!=0)

{

if(s2==0)

{

delay(5);

if(s2==0)

{

while(!s2);

if(s1num==1)

{

year++; 

if(year==100)

year=0;

write_ymd(3,year);

write_com(0x80+3);

}

if(s1num==2)

{

month++;

if(month==13)

month=1;

write_ymd(6,month);

write_com(0x80+6);

}

if(s1num==3)

{

day++;

if(year%4==0&&month==2)

{

    if(day==30)

day=1;

}

if(year%4!=0&&month==2)

{

    if(day==29)

day=1;

}

if(month!=2&&month!=4&&month!=6&&month!=9&&month!=11)

{

    if(day==32)

day=1;

}

if(month==4||month==6||month==9||month==11)

{  

if(day==31)

day=1;

}

write_ymd(9,day);

write_com(0x80+9);

}

if(s1num==4)

{

week++;

if(week==8)

week=1;

write_week(week);

write_com(0x80+12);

}

if(s1num==7)

{

miao++; 

if(miao==60)

miao=0;

write_sfm(10,miao);

write_com(0x80+0x40+10);

}

if(s1num==6)

{

fen++;

if(fen==60)

fen=0;

write_sfm(7,fen);

write_com(0x80+0x40+7);

}

if(s1num==5)

{

shi++;

if(shi==24)

            {

   shi=0;

}

   if(s4num==0)

   {       

      write_sfm(4,shi);

      write_com(0x80+0x40+4);

   }    

   if(s4num==1)

   {

      zhuanhuan();

      _shi();

      write_sfm(4,pshi);

      write_com(0x80+0x40+4);

       }

      }

}

}

}

if(s3==0)

鏈接：https://pan.baidu.com/s/1rjwJjcgsq29Moun2Z2BBzg

提取碼：1234