1引言...........................................................................................................2
1.1编写目的.............................................................................................2
1.2背景 ....................................................................................................2
1.3定义 ....................................................................................................2
1.4参考资料............................................................................................2
2任务概述..................................................................................................3
2.1目标 ....................................................................................................3
2.2用户的特点.......................................................................................3
2.3假定和约束.......................................................................................3
3需求规定..................................................................................................3
3.1对功能的规定....................................................................................3
3.2对性能的规定...................................................................................5
3.2.1精度..............................................................................................5
3.2.2时间特性要求 ............................................................................5
3.2.3灵活性.........................................................................................5
3.3输人输出要求...................................................................................5
3.4数据管理能力要求 ..........................................................................6
3.5故障处理要求...................................................................................6
3.6其它专门要求...................................................................................6
4运行环境规定 .........................................................................................6
