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What Is Gui?


This has lead to a great deal of standardization and consistency among GUI design criteria. Therefore, most application’s GUI adhere to one of the three major GUI paradigms, the Apple Macintosh, the IBM Systems Application Architecture , or the X-Windowing System. While none of these GUI designs are perfect, the overall design concepts are good enough to make radical departures counterproductive , unless there are significant performance enhancements. This paper will survey the common definitions of what a GUI is and review the three common, GUI standards in the market today.

graphical user interface gui

Although a separate GUI standard, many X-Window based GUI, such as Motif and TCL/TK, have copied the look and feel of the IBM SAA. X-Windows is still the underlying library for these GUI. This is because any X-Windows software can use the X-Windows library, which gives it great portability and standardization across platforms. Figure 1 illustrates a typical X-Windows GUI with three common icons. Researchers at the Xerox Palo Alto Research Center designed the first application with a GUI, the Xerox Star, in 1977.

This is because, at a distance greater than 2.5 degrees from the point of fixation, visual acuity decreases by half. Therefore, a circle of radius 2.5 degrees around the point of fixation is what the user can see clearly. X-Windows also works directly with networks, which allows the GUI display to be on one computer and the application that the user needs on another computer. It does not matter if the two computers are in different rooms or on different continents.

What Is Gui?

What are the types of GUI?

There are four prevalent types of user interface and each has a range of advantages and disadvantages:Command Line Interface.
Menu-driven Interface.
Graphical User Interface.
Touchscreen Graphical User Interface.

The Xerox Star was unique because the researchers carefully designed the computer human interface before they began designing the internal workings of the application. Unfortunately, the Xerox Star was too slow, and it was not commercially successful. The historical development of the GUI still impacts the three major GUI paradigms in the market today. Historically, all modern GUI are off-shoots of the Apple Macintosh.

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It addition to the three common GUI components, X-Windows has a collect of application tools and utilities as a built in X-Library. Figure 2 illustrates a TCL/TK GUI that uses the X-Library utilities.

Graphical User Interface Definition

graphical user interface gui


It will then review three of the many human factor concepts underlying good GUI design, which are visual acuity, limits to absolute memory, and the principle of grouping. The paper will then present the effect of these factors on three GUI design areas, the amount of presented information, the grouping of information, and the placement of this information on the screen.