ISO defines usability as "The extent to which a product can be used by specified users to achieve specified goals with effectiveness, efficiency, and satisfaction in a specified context of use. '' The word "usability '' also refers to methods for improving ease - of - use during the design process. Usability consultant Jakob Nielsen and computer science professor Ben Shneiderman have written (separately) about a framework of system acceptability, where usability is a part of "usefulness '' and is composed of:
what term is used to describe something that is useful and provide satisfaction
usability usability Usability usability