长沙公交查询系统需求分析说明书北邮3G长沙移动通信学院11021A2011-8-25目录1引言...............................................................................................................................................21.1编写目的................................................................................................................................21.2背景........................................................................................................................................31.3定义........................................................................................................................................31.4参考资料................................................................................................................................32任务概述.......................................................................................................................................32.1目标........................................................................................................................................32.2用户的特点.............................................................................................................................42.3假定和约束.............................................................................................................................43需求规定.......................................................................................................................................43.1对功能的规定.........................................................................................................................43.2对性能的规定.........................................................................................................................43.2.1精度.................................................................................................................................43.2.2时间特性要求..................................................................................................................53.2.3灵活性..............................................................................................................................53.3输人输出要求.........................................................................................................................53.4数据管理能力要求.................................................................................................................53.5故障处理要求.........................................................................................................................53.6其他专门要求.........................................................................................................................64运行环境规定................................................................................................................................64.1设备........................................................................................................................................64.2支持软件................................................................................................................................64.3接口........................................................................................................................................64.4控制.............................
