Design must be appropriate and accessible by the intended audience; otherwise it risks creating barriers preventing people from fulfilling the tasks that the products set out to accomplish.
“All design should be human-centred, it’s as simple as that. And I mean human-centred, not ‘user-centred’ or ‘user-friendly’, because users are human beings after all.”
If we're designing a digital product to be used by children, teenagers, young adults or older generations, we need to be conscious of our approach to language, typography, colour and image.
User Interface (UI) Design focuses on anticipating what users might need to do and ensuring that the interface has elements that are easy to access, understand, and use to facilitate those actions. UI brings together concepts from interaction design visual design, and information architecture.
The Graphical User Interface (GUI) originated around the 1980s with the Xerox Star 8010 Information System with Apple's fully-fledged GUI appearing in 1984.