四、概要设计说明书 目录 1 .引言 ........................................................................................................................... 2 1 .1 编写目的 .................................................................................................................... 2 1 .2 项目背景 .................................................................................................................... 2 1 .3 定义 ........................................................................................................................... 2 1 .4 参考资料 .................................................................................................................... 3 2 .任务概述 .................................................................................................................... 3 2 .1 目标 ........................................................................................................................... 3 2 .2 运行环境 .................................................................................................................... 3 2 .3 需求概述 .................................................................................................................... 3 3 .总体设计 .................................................................................................................... 4 3 .1 处理流程 .................................................................................................................... 4 3 .2 总体结构和模块外部设计 ............................................................................................ 4 3 .3 功能分配 .................................................................................................................... 5 3 .3 .1 用户登陆 ........................................................................................................ 5 3 .3 .2 库存管理 ...................................