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CHAPTER 4(SYSTEM DESIGN) - Coggle Diagram
CHAPTER 4(SYSTEM DESIGN)
User Interface Design
Evolution of the User Interface
As information management evolved from centralized data processing to dynamic, enterprise-wide systems, the primary focus also shifted — from the IT department to the users themselves
User-centered system
-Requires an understanding of human-computer interaction and user-centered design principles
Human-Computer Interaction
Human-computer interaction (HCI) describes the relationship between computers and people who use them to perform their jobs
Main objective is to create a user-friendly design that is easy to learn and use
IBM believes that the user interface evolution will lead to computers that truly are consumer products that are simple and natural for the general population to use.
User rights suggested by IBM’s Dr. Clare-Marie Karat.
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Principles of user-centered design
Understand the Business
The interface designer must understand the underlying business functions and how the system supports individual, departmental, and enterprise goals.
The overall objective is to design an interface that helps users to perform their jobs.
Use Models and Prototypes
You can present initial screen designs to users in the form of a storyboard, which is a sketch that shows the general screen layout and design
Users must test all aspects of the interface design and provide feedback to the designers
Think Like a User
A systems analyst should understand user experience, knowledge, and skill levels.
To develop a user-centered interface, the designer must learn to think like a user and see the system through a user’s eyes.
Focus on Usability
The user interface should include all tasks, commands, and communications between users and the information system.
The objective is to offer a reasonable number of choices that a user easily can comprehend.
an effective strategy is to present the most common choice as a default, but allow the user to select other options.
Maximize Graphical Effectiveness
A well-designed interface can help users learn a new system rapidly, and be more productive.
Also, in a graphical environment, a user can display and work with multiple windows on a single screen and transfer data between programs.
Invite Feedback
it is important to monitor system usage and solicit user suggestions.
Based on user feedback, Help screens might need revision and design changes to allow the system to reach its full potential.
Document Everything
By applying basic user-centered design principles, a systems analyst can plan, design, and deliver a successful user interface.
You should document all screen designs for later use by programmers.
User-approved sketches and storyboards also can be used to document the user interface.
Eight basic guidelines
Good user interface design is based on a combination of:
ergonomic
how people work,learn, and interact with computers
aesthetics
hoe an interface can be attractive and easy to use
interface technology
operatinal structure required to carry out the design objectives
