what is ui

A user interface (UI) is the space where interactions between humans and machines occur. It is the point of human-computer interaction and communication in a device, including display screens, keyboards, and the appearance of a desktop. UI design is the process designers use to build easy- to-use and pleasurable interfaces in software or computerized devices. It focuses on the surface and overall feel of a design, encompassing all the elements a user interacts with, such as colors, typography, buttons, and icons