Irán
The extreme requirement for true and reliable information by organizations in direction of using it for decisions of managers is an unavoidable point. in this direction the information accounting system as the most important proper subset of information management system gives different financial information to users of this kind of information specially organization's managers of each organization .nowadays by arising computer accounting systems and by superfluity development of information technology , expected that quality properties of accounting information will be improved day-to-day. And improving quality properties will be caused to making better decisions by managers . for this mean in this research a sufficient try has been operated that ; in one side ;the effect of computer information accounting system will be marked and in other direction the effect of quality properties on the manager decisions will be marked. For doing this research, 124 numbers of questionnaire distributed between financial managers ,accountants and auditors of accounts supreme court and accountants of administrator of ALBORZ state .the results of this research shows that computer information accounting system increases the reliability of information and this in own rotate facilitates the matter of decision makings by managers.