Interface design:

• Viral pleasing.

• Clarity

• Compatibility

• Configurability

• Consistency

• Control

• Directness

• Efficiency

• Familiarity

• Flexibility

• Forgivers

• Predictability

• Recovery

• Responsiveness

• Simplicity

• Transparency

[A] Interface design:

1] Visual pleasing:

• Provides meaningful contrast between screen elements.

• Create groupings.

• Align screen elements and groups

• Provide three dimensional representation

• Use color and graphics effectively and simply.

2] Clarity:

The interface must be clear in visual appearance, concept and wording.

3] Compatibility:

Design must be appropriate and compatible with the needs of the user or clients.

4] Comprehensibility:

A system should be understandable, flow in a comprehensive and meaningful order.

5] Configurability:

• Enhances a sense of control.

• Encourages an active role in understanding.

6] Consistency:

A system should look, act and operate the same throughout.

7] Control:

Control is feeling in charge, feeling that the system is responding to your actions.

8] Directness:

Tasks should be performed directly.

9] Efficiency:

Transitions between various system control and should flow easily and freely.

10] Familiarity:

Build into the interface concepts, terminology, workflow and spatial arrangements already familiar to the

11] Flexibility:

Flexibility is the system’s ability to respond to individual difference in people.

12] Forgiveness:

Tolerate and forgive common and unavoidable human errors.

13] Predictability:

Tasks, displays and movement through a system should be anticipatable based on user’s previous knowledge and experience.

14] Recovery:

A person should be able to retract an action by issuing an undo command.

15] Responsiveness:

A user request must be responded to quickly.

16] Simplicity:

Provide as simple an interface as possible.

17] Transparency:

Workings and reminders of workings inside the computer should be invisible to the user.