摘要： 面向对象系统平坦式的体系设计结构，以及它本身对实时、并发和分布等特征的支持的欠缺，使它在相关领域的应用受到了一定的限制．层次化面向对象设计方法（ＨＯＯＤ）是针对实时嵌入式系统设计而定制的在ＯＯＤ的基础上引入了层次化的思想，并把对实时、并发和分布等特性的支持无缝地集成在一起，使之更适合实时嵌入式系统的设计．

关键词: 层次化面向对象设计, 对象控制结构, HOOD设计树, 实时嵌入式系统

Abstract: The flat architecture of object oriented design(OOD) and the lack of support to real-time, concurrency and distribution limits its use in relative area. Hierarchical object oriented design(HOOD).customized for real time and embedded system design. introduces hierarchical breakdown and refinement based on OO, and integrates support to real-time, concurrency and distribution seamlessly, thus makes it more suitable for real-time and embedded system design.

中图分类号: 

• TP311.52