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...International journal of scientific engineering research volume issue november issn critical review extended waterfall model rajesh h kulkarni p padmanabham k baseer abstract software product quality improvement is a desired attribute and strenuous effort required to achieve that usability also as it helps in identifying how effectively user achieves goals concrete efforts integrate human computer interaction exist the form models by many researchers better experience an oft expressed products designed nowadays this regard lead various proposals smooth integration se processes with hci for development one such process paper presents suggests means bring nearer two diverse communities index terms introduction he refer figure field ts oftware has been playing chief role classic sdlc from past was put forth s later called heavyweight lifecycle long say six turned out be renowned its struc months consists phases require ture takes cascade involving can ment design analyze code test maintai...