127 National Conference on Computational Technologies-2015, Organized by Dept. of Computer Science & Application, University of North Bengal - India                               Research Paper Volume-3, Special Issue-1 E-ISSN: 2347-2693 User Interface Design Issues for Easy and Efficient Human Computer Interaction: An Explanatory Approach Debasmita Saha 1* Dept. of Computer Science, University of Gour Banga, P.O-Mokdumpur, Dist-Malda, India. 1 debasmita.saha@hotmail.com Ardhendu Mandal 2 , S. C. Pal 3 Dept. of Computer Science and Application, University of North Bengal, Raja Rammohanpur, Dist-Darjeeling, India. 2 am.csa.nbu@gmail.com, 3 schpal@rediffmail.com Abstract—User Interface (UI) is the part of the system that acts as an intermediately between the user and system facilitating the user to interact with the system in an efficient manner. The user interface is everything the end user comes into contact with while using the system physically, perceptually, and conceptually. To the end user, the user interface is the system itself. Hence, usability of a system remains one of the most important quality attribute in determining the total quality of any software system. The challenge of user-interface design is to construct a natural dialog sequence that allows the user and computer to exchange the messages required to carry out a particular task. The user interfaces do vary from system to system and user to user. In this paper we have identified the different issues in designing efficient user interface. All these issues are discussed at length with suitable example. Keywords-User Interface, SDLC, Human Computer Interaction, Software Design, Software Engineering I. USER INTERFACES: AN INTRODUCTION Usability is the ease of use and understandability of a software application [1]. UI plays a very important role in increasing usability of an application as it is the medium of human computer interaction. Irrespective of degree to which the application supports the functional requirements, unless the application is ease, efficient and close to heart of user- the application has to face failure. Since UI gives the abstract view of the entire system to user, the success of the system greatly depends on it. Hence, designing the UI should be given adequate importance in the system design life cycle (SDLC) process. II. ISSUES IN DESIGNING USER INTERFACE In recent days, significant development has been observed in the field of digital electronics, system design and development. Availability of mobile devices i.e. mobile phones, net pads, laptops etc. with advanced features are gifts to the user community. Moreover, decreasing cost and better quality of these digital devices made these systems available to people at almost every level of the society. Thus the numbers of users have been increasing significantly. There are several types of systems and different types of users with distinguished ability and challenges. With ever increasing number of diversified users, the challenges in designing user interfaces for these systems have become complex and important issues. The issues in designing efficient and usable interfaces are as follows: • User Characteristics Issues • User interface Type Issues • Message Construction Issues • Graphics Design Issues • Look and Feel Issues