1 引言...............................................................................................................................................21 。 1 编写目的 .............................................................................................................................. 2 1.2 背景 ........................................................................................................................................ 2 1.3 定义 ........................................................................................................................................ 3 1 。 4 参考资料 .............................................................................................................................. 3 2 程序系统的结构 ............................................................................................................................ 4 3 程序 1 （标识符 ) 设计说明 ............................................................................................................ 4 3.1 程序描述 ................................................................................................................................ 4 3 。 2 功能 ..................................................................................................................................... 5 3 。 3 输人项 ................................................................................................................................. 6 3. 4 输出项 .................................................................................................................................... 6 3 。 5 流程逻辑 .............................................................................................................................. 7 3. 6 接口 ........................................................................................................................................ 7 3. 7 尚未解决的问题 .............
