Create index.md

Author: sidx8

topics/ui/index.md

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+---
+alias: user interface
+display_name: ui
+short_description: User interface(UI) or user interface engineering is the design of user interfaces for machines and software.
+topic: ui
+wikipedia_url: https://en.wikipedia.org/wiki/User_interface_design
+---
+User interface (UI) design or user interface engineering is the design of user interfaces for machines and software, such as computers, home appliances, mobile devices, and other electronic devices, with the focus on maximizing usability and the user experience. The goal of user interface design is to make the user's interaction as simple and efficient as possible, in terms of accomplishing user goals (user-centered design).