The user interface design document defines user interface design as how people interact with electronic devices through screens, menus, icons, keyboard shortcuts, gestures, buttons and other input devices. It lists the main usability goals of user interface design as effectiveness, efficiency, safety, utility, learnability and memorability. The document then describes each goal and outlines the main phases of the user interface design process, including user analysis, usability testing and graphic interface design.

1. USER INTERFACE DESIGN

2. MEANING OF USER INTERFACE DESIGN
 The way a person interacts with a computer or electronic device.
The user interface (UI) comprises the screen menus and icons,
keyboard shortcuts, mouse and gesture movements, command
language and online help, as well as physical buttons, dials and
levers. All input devices, such as a mouse, keyboard, touch
screen, remote control and game controller, are also included. In
the future, natural language recognition and voice recognition will
become standard components of the user interface.

3. USABILITY GOALS
 Usability is broken down into the following goals:
 Effectiveness
 Efficiency
 Safety
 Utility
 Learnability
 Memorability

4.  Safety:- Does the system prevent users from making serious errors and, if
they do make an error, does it permit them to recover easily?
 Utility:- Does the system provide an appropriate set of functions that enable
users to carry out all their tasks in the way they want to do them?
 Learnability :- How easy is it and how long does it take to get started using
a system to perform core tasks and to learn the range of operations to
perform a wider set of tasks?
 Memorability:- What kinds of interface support have been provided to help
users remember how to carry out tasks, especially for systems and
operations that are used infrequently?
 Effectiveness:- Is the system capable of allowing people to learn well, carry
out their work efficiently, access the information they need?
 Efficiency:- Once users have learned how to use a system to carry out their
tasks, can they sustain a high level of productivity?

5. PROCESS OF USER INTERFACE DESIGN
 There are several phases and processes in the user interface design, some of
which are more demanded upon than others, depending on the project.
 User analysis :- analysis of the potential users of the system either through
discussion with people who work with the users and/or the potential users
themselves.
 Usability testing :- testing of the prototypes on an actual user—often using a
technique called think aloud protocol where you ask the user to talk about their
thoughts during the experience
 Graphic Interface design :- actual look & feel design of the final graphical user
interface (GUI). It may be based on the findings developed during the usability
testing if usability is unpredictable, or based on communication objectives and
styles that would appeal to the user.
 Usability testing :- testing of the prototypes on an actual user—often using a
technique called think aloud protocol where you ask the user to talk about their
thoughts during the experience.

6. THANKS…