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