The view of the application through which the user can interact and use the software is the User interface of the software. User interface enables the user to control and operate the software and hardware. For all forms of digital technology that appears in mobile phones, computers, music players and all the other sources, user interface appears and is used.
The information about the software is made available to the user by user interface. The platform for human-computer interaction is offered by UI.
There can be different forms of UI. On the basis of combination of the hardware and the software, UI can take any of the forms such as audio-video based, text-based, it can be graphical form.
The following features of the user interface enables to increase the popularity of the software.
The software User Interface can be divided into -
Prior to the monitor displaying videos, Command Line Interface (CLI) was widely used a common toll of UI. The minimum interface that a user has been obtained by the software is CLI. Many of the programmers and technical users prefer CLI as their best option.
The user can communicate through using codes in a command prompt facilitated by the CLI. The syntax of all the commands are to be known by the user. The errors of the users were not handled perfectly by the earlier version of the CLI.
The instruction according to which the system has to execute is represented in the form of commands. The users are enabled to easily operate by making available some of the methods such as macros and scripts.
The resources of the computer are used in minimal by CLI.
The different elements of the CLI are as follows -
The user is facilitated with the graphical means for communicating with the system and which is known as Graphical User Interface. Hardware and software combine together and constitute GUI. The software is interpreted by the user with the help of GUI.
When compared with CLI, amount of the resources utilized is high for GUI. More complex GUI designs are developed by the designers and programmers for increasing the accuracy, efficiency and speed of the interface.
The hardware or software system can be communicated through GUI by a means of different components.
Different ways by which the user is enabled to interact and work with the system are made available by the components of the GUI. GUI system includes the following elements -
Some of the elements of components of GUI are specific to only GUI application. They are as follows -
Other impressive GUI components are:
User Interface design performs many activities. The design and implementation of GUI is similar to that of SDLC design. Among the different models such as Waterfall, Iterative or Spiral, any one of them can be chosen for implementing GUI.
Some of the specific steps need to be satisfied or followed by any model that is selected for the design and the implementation of GUI. The steps are as follows -
In any software system, GUI can be designed and implemented by using a variety of tools. Some of the tools are grounded on the basis of environment of the software.
A collection of GUI controls is facilitated by the tools of GUI implementation. Designers are enabled to alter the code for customizing the software.
The GUI tools are used for different purposed and used on different platforms. Based on the use and platform, GUI tools are classified into various segments.
Mobile GUI, Computer GUI, Touch-Screen GUI.
GUI can be designed and implemented by using the following tools -
The Golden Rules of the User Interface are as follows -
The actions must be arranged in a sequence in such a manner that they appear consistently. In some of the cases like menus, help screen the terms that are mostly identical need to be used. The commands that are involved need to be consistent.
Users always desire to eradicate the repetition and shorten the use. For which many of the short-cut keys, macros and hidden commands are facilitated to the frequent users.
The feedback provided by the system for the action of the operator must be informative. The feedback should be modest in case of minor and recurring actions. The feedback should be more substantial in case of major actions.
The actions are categorized into different groups and by inserting a beginning, middle and end to each of the group. The feedback is structured in such a way that it is informative and is provided at the end of completion of each of the group. This provides the operations to feel accomplishment satisfaction. The operator is directed that the next group of actions can be taken up.
The system should be designer in a manner that errors are not made by the user. In case of error being done by the user, it is the responsibility of the system to detect the error and provide methods to handle such errors.
This option of reversal of actions is very useful for the users. This feature can be applied on the options that are not familiar to know how a particular option works. The errors which are done can be undone by this feature. A single action or a group of actions can use the feature of reversal of action.
When the users are technical savvy and knowledgeable, the software has to be designed in such a manner that the users are made to initiate the actions rather than only responding.
Short-term memory load of the user can be reduced by following some of the techniques like consolidating the displays of multiple pages, motion frequency of the window need to be slow down, keep small displays etc.
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