在嵌入系统中使用RTOS是大势所趋。原因主要是现在在大多数情况下编程效率比执行效率重要（单片机便宜嘛）。本文件适用于51单片机-embedded systems in the use of RTOS is the general trend. The main reason is that in most cases than the efficiency of programming efficiency in the implementation of important (SCM chea