Information: - Text-based user interface (TUI), also called textual user interface or terminal user interface, is a retronym coined sometime after the invention of graphical user interfaces. TUIs display computer graphics in text mode. An advanced TUI may, like GUIs, use the entire screen area and accept mouse and other inputs. - The user interface (UI), in the industrial design field of humancomputer interaction, is the space where interactions between humans and machines occur. The goal of this interaction is to allow effective operation and control of the machine from the human end, whilst the machine simultaneously feeds back information that aids the operators' decision-making process. Examples of this broad concept of user interfaces include the interactive aspects of computer operating systems, hand tools, heavy machinery operator controls, and process controls. The design considerations applicable when creating user interfaces are related to or involve such disciplines as ergonomics and psychology. - In computing, a computer keyboard is a which uses an arrangement of buttons or keys to act as a mechanical lever or electronic switch. Following the decline of punch cards and paper tape, interaction via teleprinter-style keyboards became the main input device for computers. - The graphical user interface (GUI ), is a type of user interface that allows users to interact with electronic devices through graphical icons and visual indicators such as secondary notation, instead of text-based user interfaces, typed command labels or text navigation. GUIs were introduced in reaction to the perceived steep learning curve of command-line interfaces (CLIs), which require commands to be typed on a computer keyboard. - In graphical user interfaces, the window decoration is a part of a window in most windowing systems. - A computer is a device that can be instructed to carry out an arbitrary set of arithmetic or logical operations automatically. The ability of computers to follow a sequence of operations, called a "program", make computers very flexible and useful. Such computers are used as control systems for a very wide variety of industrial and consumer devices. This includes simple special purpose devices like microwave ovens and remote controls, factory devices such as industrial robots and computer assisted design, but also in general purpose devices like personal computers and mobile devices such as smartphones. The Internet is run on computers and it connects millions of other computers. - In computing , a window is a graphical control element . It consists of a visual area containing some of the graphical user interface of the program it belongs to and is framed by a window decoration . It usually has a rectangular shape that can overlap with the area of other windows . It displays the output of and may allow input to one or more processes . Windows are primarily associated with graphical displays , where they can be manipulated with a pointer by employing some kind of pointing device . Text - only displays can also support windowing , as a way to maintain multiple independent display areas , such as multiple buffers in Emacs . Text windows are usually controlled by keyboard , though some also respond to the mouse . A graphical user interface ( GUI ) using windows as one of its main '' metaphors '' is called a windowing system , whose main components are the display server and the window manager . - In computing, a windowing system (or window system) is a type of graphical user interface (GUI) which implements the WIMP (windows, icons, menus, pointer) paradigm for a user interface. Each currently running application is assigned a usually resizable and usually rectangular shaped surface of the display to present its graphical user interface to the user; these windows may overlap each other, as opposed to a tiling interface where they are not allowed to overlap. Usually a window decoration is drawn around each window. The programming of both the window decoration and of available widgets inside of the window, which are graphical elements for direct user interaction, such as sliders, buttons, etc., is eased and simplified through the use of widget toolkits. - Secondary notation is the set of visual cues used to improve the readability of a formal notation. Secondary notation is often not a part of the formal notation itself. Rather, it is a method of organizing the formal notation to allow it to be more easily understood. Thus, secondary notation does not change the actual meaning of the formal notation, rather it allows for the meaning to be readily understood. In text such as programming languages, this can be done using cues such as indentation and coloring. In formal graphical notations, this can be done through the use of symmetry or proximity to indicate relatedness. - A learning curve is a graphical representation of the increase of learning (vertical axis) with experience (horizontal axis). What is the relationship between 'window ' and 'widget'?
Answer:
instance of