仿真电路图：
部分源代码：
#include<reg51.h>
#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)
链接：https://pan.baidu.com/s/1rjwJjcgsq29Moun2Z2BBzg
提取码：1234