UC／OS—II是一种专门为微处理器设计的抢占式实时多任务操作系统，具有源代码公开、可移植性、可裁减性、稳定性和可靠性高等特点。由于UC／OS—II是为嵌入式应用编写的通用软件，故在具体应用时需根据不同单片机的特点进行移植，其大部分代码是用标准C语言所写．只有与处理器相关的一部分代码用汇编语言编写．因而具有很强的移植性，能在从8位到64位单片机以及DSP等超过40种不同构架的微处理器上实现运行。-UC/OS-II is a microprocessor designed specifically for preemptive real-time multi-tasking operating system, with source code open, portable, can be trimmed, stability and reliability high. As the UC/OS-II is prepared for general-purpose embedded applications software, it is required in specific applications depending on the characteristics of single-chip transplantation, most of its code is written using standard C language. Associated with the processor is only part of the code used to compile languages. Thus has a strong transplanted to from 8-64, as well as single-chip DSP, such as more than 40 kinds of different microprocessor architecture to achieve operation.