Date Added: May 2012
Software usability became an important quality factor in recent years due to the increasing demand of interactive software systems. Now mostly systems are developing using object-oriented methodology. The object-oriented methodology reduces design complexity, so enhances usability. Also object-oriented approach improves the usability of software system when software engineering process combined with usability engineering. This paper proposes an extended ISO-9241 usability model. Since fuzzy modeling approach deals with uncertainty and impreciseness involved in usability and its sub-factors, this paper investigate the application of fuzzy AHP technique to ISO-9241 model and the proposed enhanced ISO-9241 model. The result shows better usability of proposed model in comparison of existing model.