系统软件设计与开发（第一稿）局域网即时通信软件项目需求分析和功能说明书公安海警学院电子技术系2010级电子信息工程专业03742010021张力文目录第1章引言………………………………………………………………………………………31.1编写目的………………………………………………………………………………….31.2编写背景………………………………………………………………………………….31.2.1系统名称及行业情况……………………………………………………………..31.2.2文档读者内容及参看资料………………………………………………………..31系统软件设计与开发（第一稿）第2章任务概述2.1项目背景及目标.................................................................................................................92.2用户特点............................................................................................................................92.3条件....................................................................................................................................92.4运行环境............................................................................................................................92.4.1硬件环境...............................................................................................................92.4.2软件环境...............................................................................................................9第3章系统概述............................................................................................................................11第4章系统功能组成....................................................................................................................124.1功能名称及功能编号.......................................................................................................124.1.1功能描述.............................................................................................................124.1.2业务流图、处理逻辑..........................................................................................124.1.3功能细分、及各个子功能之间的关系..............................................................124.1.4输入.....................................................................................................................134.1.5输出.....................................................................................................................134.1.6约束条件.............................................................................................................134.1.7异常处理.............................................................................................................13第5章菜单和界面原型................................................................................................................13第6章非功能需求........................................................................................................................146.1用户管理和使用权限管理...............................................................................................146.2软件性能需求分析...........................................................................................................146.3软件易用性需求的分析...................................................................................................146.4软件开放性、可扩充性、可维护性方面的需求分析...................................................146....
