经过产品验证的多事件操作系统，全部C函数组成，构思巧妙，占用内存少，适用于普通单片机，不仅简单系统，复杂系统也能应用，有很强的实用性-After a multi-event operating product certification systems, composed of all the C functions, ingenious, small footprint, suitable for ordinary microcomputer, not only simple systems, complex systems can also be applied, has a strong practical