一种在嵌入式系统中使用串口用计算机直接更新实时时钟的时间数据的思想， 以及数据处理方法，注意看串口以及串口中断服务函数的内容和算法-A computer using the serial port in the embedded system directly update data in real-time clock of thinking, as well as data processing method, note the serial port as well as the content and method of the serial interrupt service routine