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SYSTEM DESIGN - Coggle Diagram
SYSTEM DESIGN
4.1 UNDERSTAND USER INTERFACE DESIGN
User Interface Design
features affect two-way communications between the user and the computer.
interact with menus, functions, output
interact with hardware, software, screens
interact with a computer system
Human Computer Interaction (HCI)
Its means relationship between computers and people who use them to perform their jobs.
The communications and between computers and people
Principles of User-Centered Design
Understand the Business
Understand the underlying business functions.
The system supports individual, departmental and enterprise goals.
The overall objective is to design an interface that helps users to perform their jobs.
Maximize Graphical Effectiveness
A well-designed interface help users learn a new system rapidly, and be more productive.
Think Like a User
The interface should use terms and metaphors that are
familiar to users.
Use Models and Prototypes
construct models and prototypes for user
approval.
Focus on Usability
include all tasks, commands, and communications between users and the information system.
Invite Feedback
observing and surveying users.
help screens might need revision
design changes to allow the system to reach its full potential.
Document Everything
document all screen designs for later use by
programmers.
User Interface Design Guidelines
Design a transparent interface.
System design objectives, and calling
attention to the interface.
Create an interface that is easy to learn and use.
Make it easy to navigate or return to any level in the menu
structure.
Enhance user productivity.
Organize tasks, commands, and functions in groups that resemble
actual business operations.
Minimize input data problems.
Create input masks, which are templates or patterns that make it
easier for users to enter data. Also use data validation rules, which
limit the acceptable values that users can enter.
Make it easy for users to obtain help or correct errors.
Use hypertext links to assist users as they navigate through help
topics.
Provide feedback to users.
Display messages at a logical place on the screen, and be consistent.
Create an attractive layout and design.
Screen density is important. Keep screen displays uncluttered, with enough white space to create an attractive, readable design.
Use familiar terms and images.
Provide a Windows look and feel in your interface design if users
are familiar with Windows-based applications.
User Interface Components
Menu Bar
toolbar
Command button
dialog box
text box
toggle button
list box
drop-down list box
option button, or radio button
check box
calendar control
A switchboard
Source Documents
source document collects input data, triggers or authorizes an input action, and provides a record of the original transaction.