中文摘要：

基于32位嵌入式微处理器的嵌入式操作系统正在从可用型、通用型到可定制型、优化型转变，该文阐述了可定制嵌入式操作系统（Customized Embedded Operating System，CEOS）是下一阶段嵌入式操作系统的发展趋势，综合论述了国内外可定制嵌入式操作系统CEOS的研究状况，提出了CEOS今后的研究方向，阐明了研究CEOS的意义。

英文摘要：

Embedded operating systems based on the 32-bit micro-processor turn from generic, applicable to customizable, optimal type. The paper clarifies the development trend of the embedded operating system, and deepens the concept of customized embedded operating system （CEOS）. Academic results home and abroad on the CEOS are discussed. Finally, the research directions and meaning on the CEOS are proposed.