说明：  嵌入式操作系统综述，介绍了嵌入式操作系统RTLinux 和RTEMS 以及VxWorks 的概况，并对这三种操作系统的性能进行比较。
(Embedded operation system, introduced the embedded operating system RTLinux and RTEMS and VxWorks profile, and the performance of the three operating systems compare.)