目录
1 引言 ..........................................................................................................................................................3
1.1 编写目的.....................................................................................................................................3
1.2 项目背景.....................................................................................................................................3
2 项目描述 .................................................................................................................................................5
2.1 项目提出以及意义 ..................................................................................................................5
2.2 项目具体内容介绍 ..................................................................................................................5
2.3 项目研究现状............................................................................................................................6
3 用户场景 .................................................................................................................................................6
3.1 用例..............................................................................................................................................6
3.2 用例图.......................................................................................................................................10
3.3 IPO 图.........................................................................................................................................11
4 数据流图...............................................................................................................................................13
4.1 顶层数据流图 .........................................................................................................................13
4.2 中层数据流图 .........................................................................................................................13
4.3 底层数据流图 .........................................................................................................................15
5 状态图 ...................................................................................................................................................16
6 CRC 卡 ....................................................................................................................................................17
7 数据词典...............................................................................................................................................19
7.1 数据流定义表 .........................................................................................................................19
7.2 数据元素定义表.....................................................................................................................19
7.3 外部项定义表 ..........................................................................................................................20
8 验收标准...............................................................................................................................................20
8.1 功能需求 ..................................................................................................................................21
8.2 性能需求 ..................................................................................................................................21
8.3 安全性规定..............................................................................................................................22
8.4 可维护性需求 .........................................................................................................................22
9 运行环境规定......................................................................................................................................24
9.1 服务器端 ..................................................................................................................................24
9.2 设备要求 ..................................................................................................................................24
9.3 软件环境依赖 .........................................................................................................................24
9.4 客户端.......................................................................................................................................24
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