“There are a variety of university-level computer-human interaction (CHI) programs. Although a few offer breath and diversity, many students graduate from universities that offer only one or two CHI courses. As such, most students have a limited background in the various CHI areas. This article offers a general overview in one area, graphical user interfaces (GUI). A GUI allows a computer user to move from application to application. A good GUI makes an application easy, practical, and efficient to use, and the marketplace success of today’s software programs depends on good GUI design. Consider the Macintosh and the IBM-PC. Computer users view Apple’s Macintosh computers as having the best GUI. Correspondingly, their positive view of the Macintosh system is almost double that of the Windows users. Correspondingly, brand loyalty among Macintosh users is almost 20% higher than that for Windows users.”