CD4094 Shift Bus Register Driver

//program...    
#include    
#include    
#define uint  unsigned int    
#define uchar unsigned char    
 
sbit k6=P1^7;
sbit k5=P1^6;
sbit k4=P1^5;
sbit k3=P1^4;
sbit k2=P1^3;
sbit k1=P1^2;
sbit LED_ON=P1^1;
sbit led=P3^7;
sbit A_=P3^3;
sbit B_=P3^4;
sbit C_=P3^5;
sbit DEL=P1^0;


sbit STR = P3^2; //Define each port of CD4094;    
sbit DATA = P3^1;   
sbit CLK  =  P3^0;
fly tt,tt1,K=0;
uchar KEY();
  
uchar code table[]={0x03,0x9f,0x25,0x0d,0x99,0x49,0x41}; 
   
//code unsigned char C51BOX2[3] _at_ 0x43;    
void Out_4094(uchar data1); //CD4094 write data sub-function;    
void Delay(uint a); //delay sub-function;    
         //Main program starts;
 void timer0(void)  interrupt 1  using  0
{
 TH0 =5000/256;
 TL0 =5000%256;
 if(K==0)
{tt++;
 
 if(K==0&&tt==7){
  {tt=0;LED_ON=~LED_ON;}
 }
  }
  Out_4094(table[K]);
  if(K!=0) 
   LED_ON=0;
   tt1++;
   if(tt1==7){tt1=0;led=~led;}
}   
void main()   
{   
  uchar i,f,g; //infinite loop;
   TMOD=0x01;
 TH0 =5000/256;
 TL0 =5000%256;
 EA=1;
 ET0=1;
 TR0=1;
 A_=0;
 B_=0;
 C_=0;
 DEL=0;    
  while(1)    
  {   
/*for(g=0;g<6;g++)
  {Delay(30000);
    f=table[g];
    Out_4094(f); //Call the display sub-function;    
    Delay(30000); //delay;    
  }  */

  KEY();
if(K==0){A_=0;B_=0; C_=0; DEL=0  ;}
if(K==1){A_=0;B_=1; C_=1; DEL=0  ;}
if(K==2){A_=1;B_=0; C_=1; DEL=0  ;}
if(K==3){A_=0;B_=0; C_=1; DEL=0  ;}
if(K==4){A_=1;B_=1; C_=0; DEL=0  ;}
if(K==5){A_=0;B_=1; C_=0; DEL=1  ;}
if(K==6){A_=1;B_=0; C_=0; DEL=1  ;}

 
 

}
}   
void Out_4094(uchar data1) //write CD4094 sub-function;    
{   
  uchar i; //define subfunction;    
  STR=0; //Keep the current state unchanged;    
  for(i=0;i<8;i++) //Write eight bits of data into CD4094;    
  {   
   if(data1&0x01) //Judge concurrent serial data;    
    {   
   DATA=1; //Send high level;    
 }   
 else   
 {   
   DATA=0; //send low level;    
 }   
    CLK=0; //Form a rising delay pulse;    
 _nop_();   
 _nop_(); //delay;    
 _nop_();   
 CLK=1;   
 data1>>=1; //data shift, send next bit of data;    
   }   
   STR=1; //Data sent; update display;    
}   
void Delay(uint a) //delay sub-function;    
{   
  uint b;   
  for(b=0;b