多任务系统中，内核负责管理各个任务，或者说为每个任务分配CPU时间，并且负责任务之间的通讯。内核提供的基本服务

以使用实时内核可以大大简化应用系统的设计，是因为实时内核允许将应用分成若干个任务，由实时内核来管理它们。内核

用程序的额外负荷，代码空间增加ROM的用量，内核本身的数据结构增加了RAM的用量。但更主要的是，每个任务要有自己的

吃起内存来是相当厉害的。内核本身对CPU的占用时间一般在2到5个百分点之间。

UC/OS-II有一个精巧的内核调度算法,实时内核精小，执行效率高，算法巧妙,代码空间很少。-multi-tasking system, the kernel is responsible for all management tasks, or tasks assigned to each CPU time, also responsible for the communication between tasks. Kernel provide basic services to the use of real-time kernel can greatly simplify the application system design, Real-time kernel is allowed to use divided into several tasks, from real-time kernel to run them. Kernel with the additional load procedures, code space to increase the amount of ROM, the kernel data structures to increase the amount of RAM. But more importantly, each must have its own task-eating memory to be quite drastic. CPU kernel itself to the occupier of the time normally two to five percentage points between. UC / OS-II is a sophisticated scheduling algorithm kernel, real-time kernel precision small, high effi