1 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 ................................................................................................................................. 3 2 程序系统的结构 ........................................................................................................................... 4 3 程序 1 （前台功能）设计说明..................................................................................................... 5 3 .1 程序描述 ................................................................................................................................. 5 3 .2 功能......................................................................................................................................... 5 3 .3 性能......................................................................................................................................... 6 3 .4 输人项..................................................................................................................................... 6 3 .5 输出项..................................................................................................................................... 7 3 .6 算法......................................................................................................................................... 8 3 .7 流程逻辑 ..................
