概要设计解决了软件系统总体结构设计的问题，包括整个软件系统的结构、模块划分、模块功能和模块间的联系等。详细设计则要解决如何实现各个模块的内部功能，即模块设-Summary of design to solve the overall structure of the software system design issues, including the structure of the software system, module division, modules and links between modules. Detailed design will have to resolve how the internal functions of each module, that module design