目录一、引言.........................................................................................................................................................................................2（一）编写目的.....................................................................................................................................................................2（二）背景.............................................................................................................................................................................2（三）定义.............................................................................................................................................................................2（四）参考资料.....................................................................................................................................................................2二、任务概况.................................................................................................................................................................................3（一）目标.............................................................................................................................................................................3（二）用户的特点.................................................................................................................................................................3三、需求规定.................................................................................................................................................................................4（一）对功能的规定..............................................................................................................................................................4（二）对性能的规定..............................................................................................................................................................71.精度.............................................................................................................................................................................72.时间特性要求..............................................................................................................................................................73.灵活性.........................................................................................................................................................................7（三）输入输出要求..............................................................................................................................................................8（四）故障处理要求..............................................................................................................................................................8（五）其他专门要求..............................................................................................................................................................8四、运行环境规定.........................................................................................................................................................................9（一）设备.....................................................
