描述了Symbian操作系统的架构，对Symbian操作系统中面向对象的关键思想进行了分析，然后分层次地对Symbian操作系统模型进行了完整的、高水平且结构化的描述，结合具体发展案例，对Symbain操作系统的历史和演进的一些关键方面进行了深入研究-Describes the Symbian operating system architecture, on the Symbian operating system, object-oriented analysis of critical thinking, and then layered on the Symbian operating system to model a complete, high-level, structured descr iption of the development combined with specific cases, Symbain operating system on the history and evolution of some key aspects of the in-depth study