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 be