自制四位数码管显示的数字钟c程序

#include
#define uchar unsigned char
uchar code shuzi[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0xc0};//0 1 2 3 4 5 6 7 8 9 0
uchar code shuza[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0xc0};//0 1 2 3 4 5 0
uchar ss,dd,ff,gg,zz;
uchar qq,ww,ee,rr,tt;
uchar z,x,qw,qe,qr,as,fe;
sbit a=P2^0;//锁存器1
sbit b=P2^1;//锁存器2
sbit c=P2^2;//锁存器3
sbit d=P2^3;//锁存器4
sbit e=P2^4;//秒灯
sbit f=P2^5;//时间指示灯
sbit g=P2^6;//设置指示灯
sbit h=P2^7;//....
sbit i=P1^0;//时间设置按键 
sbit j=P1^1;//返回
sbit k=P1^2;//加
sbit l=P1^3;//减
sbit m=P1^4;//定时设置
sbit y=P1^5;//启动定时
void ys();

void main()
{
 EA=1;      //打开总中断
 TH0=(65535-50000)/256;  //定时器复初值
 TL0=(65535-50000)%256;
 ET0=1;      //
 TR0=1;      //启动定时器
 P0=0xc0;
 P2=0xff;
 P2=0xd0;
  while(1)
 {f=0;g=1; 
    if(i==0)//设置时间 判断
   {g=0;f=1;
  while(1)
 {if(j==0){break;}
   if(i==0){ys();if(i==0){while(i==0){if(i==1){x++;break;}}}}
   if(x==5){x=1;}if(x==0){x=1;}

   if(x==1)
  {if(k==0){ys();if(k==0){ss++;if(k==0)if(ss==10){ss=0;}}} if(l==0){ys();if(l==0){if(ss==0){ss=10;}ss--;}} 
   a=1;P0=0x7f;P0=shuzi[ss];a=0; }
   
   if(x==2)
  {if(k==0){ys();if(k==0){dd++;if(k==0)if(dd==6){dd=0;}}} if(l==0){ys();if(l==0){if(dd==0){dd=6;}dd--;}} 
   b=1;P0=0x7f;P0=shuza[dd];b=0; }
   
   if(x==3)
  {if(k==0){ys();if(k==0){ff++;if(k==0)if(ff==10){ff=0;}}} if(l==0){ys();if(l==0){if(ff==0){ff=10;}ff--;}} 
   c=1;P0=0x7f;P0=shuzi[ff];c=0; }
   
   if(x==4)
  {if(k==0){ys();if(k==0){gg++;if(k==0)if(gg==3){gg=0;}}} if(l==0){ys();if(l==0){if(gg==0){gg=3;}gg--;}} 
   d=1;P0=0x7f;P0=shuzi[gg];d=0; }

 }
   }  //设置时间完

      if(m==0)//定时 判断
   {g=0;f=0;as=1;
  while(1)
 {if(j==0){as=0;break;}
   if(m==0){ys();if(m==0){while(m==0){if(m==1){x++;break;}}}}
   if(x==5){x=1;}if(x==0){x=1;}

   if(x==1)
  {if(k==0){ys();if(k==0){qq++;if(k==0)if(qq==10){qq=0;}}} if(l==0){ys();if(l==0){if(qq==0){qq=10;}qq--;}}a=1;P0=0x7f;P0=shuzi[qq];a=0; }
   
   if(x==2)
  {if(k==0){ys();if(k==0){ww++;if(k==0)if(ww==6){ww=0;}}} if(l==0){ys();if(l==0){if(ww==0){ww=6;}ww--;}} b=1;P0=0x7f;P0=shuza[ww];b=0;  }
   
   if(x==3)
  {if(k==0){ys();if(k==0){ee++;if(k==0)if(ee==10){ee=0;}}} if(l==0){ys();if(l==0){if(ee==0){ee=10;}ee--;}}c=1;P0=0x7f;P0=shuzi[ee];c=0; }
   
   if(x==4)
  {if(k==0){ys();if(k==0){rr++;if(k==0)if(rr==3){rr=0;}}} if(l==0){ys();if(l==0){if(rr==0){rr=3;}rr--;}}d=1;P0=0x7f;P0=shuzi[rr];d=0;}

 }
   }  //定时时间完
  if(y==0)//启动定时功能
  {while(1){if(y==1){h=!h;if(h==0){fe=1;}if(h==1){fe=0;}break;}}}
 if(fe==1)
 {if(gg==rr){if(ff==ee){if(dd==ww){if(ss==qq){ g=0;f=0;;ys();g=1;f=1;ys(); }}}}}

 }
}
void zhongduan() interrupt 1  //中断函
{  TH0=(65535-50000)/256;  //定时器复初值
   TL0=(65535-50000)%256;
   z++;
    if(z==80)
   {z=0;
    e=!e;
 zz++;
 if(zz==120){zz=0;ss++;}
  if(ss==10){ss=0;dd++;}
  if(dd==6){dd=0;ff++;}
  if(ff==10){ff=0;gg++;}

  if(gg==2) {if(ff>=4){ff=0;gg=0;}}
  if(gg>=3) {gg=0;}
     if(rr==2) {if(ee>=4){ee=0;rr=0;}}
  if(rr>=3) {rr=0;}
  
 if(as==0)
 {P0=shuzi[ss];a=1;a=0;
     P0=shuza[dd];b=1;b=0;
     P0=shuzi[ff];c=1;c=0;
     P0=shuzi[gg];d=1;d=0;
 }
 if(as==1) 
  { a=1;P0=shuzi[qq];a=0;
    b=1;P0=shuza[ww];b=0;
    c=1;P0=shuzi[ee];c=0;
    d=1;P0=shuzi[rr];d=0;
   }
    }

}
void ys()
{for(qw=255;qw>0;qw--)
 for(qe=255;qe>0;qe--);
 for(qw=255;qw>0;qw--)
 for(qe=50;qe>0;qe--);
}