#include <reg51.h>
sbit CS   	= P2^0;
sbit SCLK 	= P2^1;
sbit DIN  	= P2^2;	
sbit DOUT 	= P2^3;
sbit MSBRA	= ACC^7;
sbit LSBRA	= ACC^0;
void main(void)
  {
    unsigned char conbyte=0x9E;		
    unsigned char x;		
    while(1)
     {
      ACC=conbyte;		
      CS=0;
      for(x=0; x<8; x++)
       {
        SCLK=0;
        DIN=MSBRA;  		
        Delay();
        SCLK=1;     		
        Delay();
        ACC = ACC << 1;	
       }
      CS=1;    			
      SCLK=0;			
      CS=0;			
      SCLK=1;			
      Delay();
      SCLK=0;			
      Delay();
      for(x=0; x<8; x++)
       {
        SCLK=1;		
        Delay();
        SCLK=0;	
        Delay()
        LSBRA=DOUT; 		
					
        ACC = ACC << 1;	
					
       }
      CS=1;			
      P1=ACC;			
  }