在串行通信中没有SCON设定，也没TI 设定，程序还能仿真成功

#include <reg52.h>
#define uchar unsigned char
sbit ST_CP=P3^2;  
uchar code bmp[32*8]={ //字模表
            
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,/*" "，0*/  
0x80,0x08,0x84,0x08,0x44,0x08,0x44,0x08,0x24,0x09,0x14,0x49,0x0C,0x89,0xFF,0x79,0x0C,0x0D,0x14,0x0B,0x24,0x09,0x44,0x08,0x44,0x08,0x84,0x08,0x80,0x08,0x00,0x00,/*"李",1*/
0x80,0x80,0x80,0x60,0xBE,0x1C,0xAA,0x20,0xAA,0x7F,0xAA,0x44,0xBE,0x44,0x80,0x44,
0x02,0x50,0xF2,0x4B,0x1A,0x44,0xD6,0x43,0x12,0x44,0xF2,0x4B,0x02,0x50,0x00,0x00,/*"题",6*/
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,/*" "，7*/   
};
void delay(uchar ms)         // 延时毫秒@12M,ms最大值255   
{   
    uchar i;   
    while(ms--)   
        for(i=0;i<110;i++);   
}
void main()
{uchar base,col;
while(1)
{
   for(base=0;base<=224;base=base+2) //控制移动效果。偶数  32*（8-1）=224;
   {
    for(col=0;col<16;col++) // 显示一个汉字
    {   
     SBUF=bmp[base+col*2];
     delay(1);
     SBUF=bmp[base+col*2+1];
     delay(1);
  
     P1=col;
     ST_CP=0;  //CP上升沿
     ST_CP=1;  //移位寄存器的数据进入数据存储寄存器      delay(1);  //延时显示
    }   
   }
}
}
这个程序是关于led上写汉字的，但是程序中却没有SCON设定，也没TI 设定，程序还能仿真成功