源代码：

#include <reg51.h>

char code *str = "doubixiaohanhan";

void main(void)

{

void doubixiaohanhan(char *str);

void delay_ms(int xms);

TMOD = 0X20;

SCON = 0X50;

TH1 = 0XFD;

TL1 = 0XFD;

TR1 = 1;

while(1)

{

doubixiaohanhan(str);

delay_ms(1000);

}

}

void doubixiaohanhan(char *str)

{

int i = 0;

while(str[i] != '')

{

SBUF = str[i];

while(TI==0);

TI = 0;

i++;

}

}

void delay_ms(int xms)

{

int i = 0,k = 0;

for(i ; i< xms; i++)

for(k = 0;k< 125; k++);

}