#include<reg52.h>
#include<intrins.h>
#define uchar unsigned char
#define uint unsigned int
sbit k1=P2^4;
sbit k2=P2^5;
sbit k3=P2^6;
sbit k4=P2^7;
sbit wela=P1^1;
sbit dula=P1^0;
unsigned char code f[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};
uchar t,s;
void delay(uint x)
{
uint i,j;
for(i=x;i>0;i--)
for(j=110;j>0;j--);
}
void shijian(uchar b)
{
uchar shi,ge;
shi=b/10;
ge=b%10;
dula=1;
P0=f[shi];
dula=0;
P0=0xff;
wela=1;
P0=0xfe;
wela=0;
delay(10);
dula=1;
P0=f[ge];
dula=0;
P0=0xff;
wela=1;
P0=0xfd;
wela=0;
delay(10);
}
void jian()
{
if(k1==0)
{
delay(20);
if(k1==0)
{
t++;
if(t==60)
t=0;
}
while(!k1);
}
if(k2==0)
{
delay(20);
if(k2==0)
{
if(t==0)
t=60;
t--;
}
while(!k2);
}
if(k3==0)
{ delay(20);
if(k3==0)
{
t=0;
}
while(!k3);
}
if(k4==0)
{
delay(20);
if(k4==0)
{
while(!k4);
TR0=~TR0;
}
}
}
void main()
{
TMOD=0x01;
TH0=(65336-45872)/256;
TL0=(65336-45872)%256;
EA=1;
ET0=1;
while(1)
{
jian();
shijian(t);
}
}
void T0_time() interrupt 1
{
TH0=(65336-45872)/256;
TL0=(65336-45872)%256;
s++;
if(s==20)
{
s=0;
t++;
if(t==60)
t=0;
}
}