1HCOM

Is the interactive design and operations through specific computer system criteria which includes correctness, efficiency, safety, utility, learning, and retention

• High Usability

• User interface

• Interaction

• User experience

1.    Focuses on creating systems that enhance the overall involvement of a person, which must include a satisfying, enjoyable, entertaining, helpful, motivating, aesthetically pleasing, and fun experience to the user.

• Interface

• User experience

• High usability

• Interaction

1.    Refers to an abstract model by which humans interact with the computing device to complete a given task.

• Interface

• User Usability

• User experience

• Interaction

1.    On the other hand, refers to the boundary wherein two (2) independent systems meet and act on or communicate with each other.

• High usability

• Interface

• User experience

• Interaction

Commonly known as “user-centered design,” this principle serves as the primary principle of HCI. This implies that the interaction and interface should cater to the needs and capabilities of the target users of the system in design. Basic information, such as gender, age, education level, and computing experience, are collected

• Strive for Consistency

• Reduce Memory Load

• Understand the Task

• Know the User

Understanding the task is another plausible principle of HCI. The term “task” refers to the job to be accomplished by the user with the interactive system. This principle is closely related to interaction modeling and user analysis. Understanding the task encapsulates sequence identification and structure of subtasks at an abstracted level that are appropriate for users within larger application context.

• Strive for Consistency

• Understand the Task

• Reduce Memory Load

• Remind Users

Humans are more efficient in performing tasks that require light memory load, either for long term or short term memory. Keeping the user’s short term memory load light is important in relation to the interface’s role as a quick and easy guide to complete a task. The capacity of human’s short term memory is about five (5) to nine (9) specific information with respect to the completion of a task. Light memory load also leads to less erroneous behavior.

• Remind Users

• Reduce Memory Load

• Prevent Errors/Reversal of Action

• Strive for Consistency

A way to relieve long term memory load of a user is to strive for consistency. This applies to both interaction model and interface implementation. A user has a higher tendency to be confused and exhibit inaccurate and inappropriate responses if the same subtask is involved at a different time and for a different interaction step or interface methods. Aside from being able to remember what to do, consistency and familiarity lead to higher satisfaction and preference while using the system.

• Remind Users

• Natural Interaction and Interface

• Prevent Errors/Reversal of Action

• Strive for Consistency

A significant task involves the use of memory. Another strategy is to employ interfaces that provide constant reminders about important information or actions to be performed and thus refresh the user’s memory. Feedback is associated with this principle. Feedback is an event that occurs when the output of a system is used as an input back into the system as part of a chain of events.

• Prevent Errors/Reversal of Action

• Strive for Consistency

• Remind Users

• Natural Interaction and Interface

In performing any given task, it is important to complete the task without any error. Therefore, the interaction and the interface should be designed to avoid confusion and overwork of users.

• Natural Interaction and Interface

• Remind Users

• Strive for Consistency

• Prevent Errors/Reversal of Action