Often called UI, user interface design is the design of screens that connect a user to machines and software and allow the user to manipulate them. UI focuses on maximizing usability and developing a user experience that is intuitive for humans. The goal of user interface design is to keep interactions between the interface and the user as simple and efficient as possible while still supporting enough capability for users to accomplish their goals. Graphic design plays a key role in creating an interface that affords its uses and functions. Because of this, the interface design process requires a balance between technical functionality and visual elements so the system not only operate properly, but also makes sense to the user.