编程电子时钟需要的同学可以看一下
#include<reg52.h>
#define uint unsigned int
#define uchar unsigned char
sbit key1=P2^0;
sbit key2=P2^1;
sbit key3=P2^2;
uchar num=0,temp=0,count=0;
uchar aa;
uchar hour,min,sec;
uchar code table[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90};
void delay(uint z);
void display(uchar a,uchar b,uchar c,uchar d,uchar e,uchar f,uchar aa);
void read_key();
void led();
void time_change();
void main() //主函数
{
P2=0xff;
hour=12;
min=0;
sec=0;
TMOD=0x11;
TH0=(65536-50000)/256;
TL0=(65536-50000)%256;
TH1=(65536-50000)/256;
TL1=(65536-50000)%256;
EA=1;
ET0=1;
ET1=1;
TR0=1;
TR1=1;
aa=0xff;
while(1)
{
time_change();
display(table[hour/10],table[hour%10],table[min/10],table[min%10],table[sec/10],table[sec%10],0xff);
}
}
void display(uchar a,uchar b,uchar c,uchar d,uchar e,uchar f,uchar aa) //显示函数
{
if(num==1){P1=0x01&aa;P0=a;delay(2);}else{P1=0x01;P0=a;delay(2);} //hour
if(num==1){P1=0x02&aa;P0=b;delay(2);}else{P1=0x02;P0=b;delay(2);} //hour
if(num==2){P1=0x04&aa;P0=c;delay(2);}else{P1=0x04;P0=c;delay(2);} //min
if(num==2){P1=0x08&aa;P0=d;delay(2);}else{P1=0x08;P0=d;delay(2);} //min
if(num==3){P1=0x10&aa;P0=e;delay(2);}else{P1=0x10;P0=e;delay(2);} //sec
if(num==3){P1=0x20&aa;P0=f;delay(2);}else{P1=0x20;P0=f;delay(2);} //sec
}
void timer0() interrupt 1 //定时器0中断函数
{
TH0=(65536-50000)/256;
TL0=(65536-50000)%256;
temp++;
}
void timer1() interrupt 3 //定时器1中断函数
{
TH1=(65536-50000)/256;
TL1=(65536-50000)%256;
count++;
if(count>=20)
count=0;
}
void delay(uint z) //延时函数
{
uint j,k;
for(j=z;j>0;j--)
for(k=120;k>0;k--);
}
void read_key() //读按键函数
{
if(key1==0)
{
_led=0;
delay(100);
if(key1==0)
{
delay(100);
_led=1;
num++;
if(num>3)
{
num=0;
}
while(1)
{
if(key1==0)
{
_led=0;
delay(10);
if(key1==0)
{
num++;
if(num>3)
{
num=0;
break;
}
}
while(!key1);
delay(10);
while(!key1);
_led=1;
}
if(key2==0)
{
_led=0;
delay(80);
if(key2==0)
{
if(num==1){hour++;if(hour==24)hour=0;}
if(num==2){min++;if(min==60)min=0;}
if(num==3){sec++;if(sec==60)sec=0;}
}
while(!key1);
delay(10);
while(!key1);
_led=1;
}
if(key3==0)
{
_led=0;
delay(80);
if(key3==0)
{
if(num==1)
{
hour--;
if(hour==0)
{
hour=23;
}
}
if(num==2)
{
min--;
if(min==0)
{
min=59;
}
}
if(num==3)
{
sec--;
if(sec==59)
{
sec=59;
}
}
while(!key1);
delay(10);
while(!key1);
_led=1;
}
if(count<=15)
display(table[hour/10],table[hour%10],table[min/10],table[min%10],table[sec/10],table[sec%10],0xff);
if(count>15)
display(table[hour/10],table[hour%10],table[min/10],table[min%10],table[sec/10],table[sec%10],0x00);
}
}
while(!key1);
delay(10);
while(!key1);
_led=1;
}
}
}
void time_change() //时间调整函数
{
read_key();
if(temp>=20)
{
temp=0;
sec++;
if(sec>=60)
{
sec=0;
min++;
if(min>=60)
{
min=0;
hour++;
if(hour>=24)
{
hour=0;
}
}
}
}
}
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