Guidelines in Human Computer Interface (HCI)

Human-Computer Interaction (HCI) is about making computer systems easy to use.
HCI guidelines are suggestions to help create user-friendly interfaces that work well.

Schneiderman's Eight Golden Rules are a set of eight guidelines for designing user interface that is easy to learn and use.

Strive for consistency: use consistent terminologies, Fonts and design through the interface.
Cater the Univeral usability: design a interface to be accessible to user with wide range of abilities.
Offer informative feedback: provide users with feedback on their action so that they know what is happening.
Design dialogs to yield closure: make sure that user know when a dialog box is complete and what the need to do proceed.
prevent errors: Design the interface to prevent errors from happening in the first place.
Permit reversal of action: allow users to undo their mistakes.
support internal locus of control: make user feel like they are the controller of the system.
Reduce short-time memory load: minimize the amount of the information that user need to keep in their head in order to use the system.

Norman's Seven principle are set of guidelines for designing user interface that are easy to use.

Usefulness: The interface should be useful for the tasks that users need to complete.
Usability: The interface should be easy to learn and use.
Desirability: The interface should be aesthetically pleasing and motivating to use.
Findability: User should be able to easily find the information and feature that they need
Accessibility: The interface should be accessible to user with a wide range of abilities.
Credibility: The interface should be trustworthy and credible.
value: The interface should provide users with value that is worth the time and effort it takes to use it.

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