简述原型化方法。
由系统分析人贵和程序员与用户经短暂的交谈后即确定初步的需求,然后迅速地确定系统输入、输出和处理,接着便为系统编码和测试,形成可执行的系统原型。用户对原型进行试运行,并给出修改意见。分析员根据用户反馈意见修改系统原型再交给用户运行。这种循环过程一直进行到用户满意为止,最后再编制系统的文档。
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