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Chapter 1 Differences Between Command Line Interface And Graphical User Interface


(The general exception to this is expert users of traditional interfaces who often find GUIs limiting and long-winded). The components of the interface similarly need no description to sighted people, they can simply be shown them. For people who can never have the experience of seeing or using a GUI the concepts are difficult to describe, but anyone who needs such a description might consult Morley . The GUI familiar to most of us today in either the Mac or the Windows operating systems and their applications originated at the Xerox Palo Alto Research Laboratory in the late 1970s. Later, Microsoft used many of the same ideas in their first version of the Windows operating system for IBM-compatible PCs.

a graphical user interface

It also requires human interaction via inputs given by the use of devices like the mouse, a tactile screen a joystick. The is a multitude of ways to read the user’s intention, even an eye blink can be used, recently even brainwaves can be used to operate a GUI. Eventually a Command Line Interface was developed that would allow a user to type in commands that the computer would interpret. This proved to be a much better way for people to communicate with computers and is still a favorite method for some people to use computers. At that time, no one thought normal people could use a computer. But, now everyone owns a computer and has a basic knowledge of how to use it.

2 2.2 Gui Toolbars And Menus

Who had the first GUI?

The GUI was first developed at Xerox PARC by Alan Kay, Larry Tesler, Dan Ingalls, David Smith, Clarence Ellis and a number of other researchers. It used windows, icons, and menus (including the first fixed drop-down menu) to support commands such as opening files, deleting files, moving files, etc.

The order that tasks are performed by the program is under the user’s control – not the program’s control! This means a GUI program must keep track of the “state” of its processing and respond correctly to user commands that are given in any order the user chooses. This style of programming is called “event driven programming.” In fact, by definition, all GUI programs are event-driven programs. The computer will do different things depending upon where the pointer is on the screen and how a button is pressed. A program on the computer is constantly checking for the location of the pointer on the screen, any movement of the mouse, and any buttons pressed. This program will decide what the user wanted to do by these actions and try to do it. It required electricity to be displayed, usually in a monitor, but it can also use other visual output like projectors or 3D glasses.

a graphical user interface

Graphical User Interface: Key Terms

For instance, four keys are used to move the cursor up, down, left and right . Other keys have other roles, so that the 5 key corresponds to the mouse button, another takes the cursor directly to the menu bar and so on. The reasons why GUIs are easier to use are many and have been explored and documented in many research papers and books. Most people who have tried a GUI have found it much easier to use than the alternatives.

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Examples include notifications of incoming messages, progress bars, tooltips, and pop-up windows. The Abaqus GUI Toolkit allows the modification of the GUIs which is Abaqus/CAE and Abaqus/Viewer in the Abaqus program. From the development of workflow to the automatic post-processing of analysis, the extensions are unlimited and provide the user with suitable software for his particular applications. Create the icons and widgets that are displayed to a user and organize them inside a screen window. that are displayed to a user and then it simply waits for the user to interact with them.

  • This paper describes the development of a graphical user-interface designed to facilitate the process of generating patient-specific drug doses using bayesian modelling software.
  • The graphical user interface was developed in Visual Basic (Microsoft, Inc.) and runs under the Windows 3.1 (Microsoft, Inc.) operating system.
  • Patient demographic data are stored in a relational database (Access, Microsoft, Inc.).
  • The largely object-oriented nature of the language allowed us to change the entire look and feel of the system with a few simple changes to the underlying code.
  • Use of the relational database to store patient demographic information allows greater flexibility in searching for and displaying patient specific information.