Human computer interaction

A user interface is based on basic principles of human computer interaction. ”Human computer interaction described the relationship between computer and people who use them to perform business related tasks as shown on figure.HCL concept apply to everything from PC desktops to globle networks.In the necessary to enter input system and obtain output in the form of screen display and printed reports.

You will design user interfaces for in house developed software and customized interface for various commercial packages and user productivity application. Your main objective is to create a user friendly design that is easy to use.

Industries leaders Micrososft and IBM devote considerable resources to user interface between one way mirrors.Graphical user interface with graphical objects and pointing devices up to current times where interface designers strive to the translate user behaviour and desires into a transparent interface.

Internatinal Business Management believs that user interface evolution will lead to computers that truly to the consumer products that are simple and beautiful natural gfor the general population to the use.

Guidelines for User interface Design

It is important to design a user interface that easy to use and efficient. When you create a users interface you hould follow eight basic guidelines.These guidelines also apply to data entry screen design.

Focus on the basic objectives.
Facilitate the system design objectives rather than calling attention to the interface.
Create a design that is easy to remember.
Minimize data entry problems.
Allow user to correct errors easily.

Provides features that promote efficiency.
Show all commandina list of menu items.
Select only those imagesthat users can understand easily.


Minimize input data problems.
Bult in result that enforce data integrity.More information on data validation techniques is provided in the section.


Provide feedback to users.
Use message that are specific and professional. Avoid message that are vague.

Create an attractive layout and design.
Use hyperlink thatallow the user to jump to related topics.When the user enter data that compulsory fills the field.


Good user interface design is based on the combination of ergonomics abd interface technology. Economics describes learn and intract focus on easy to use.The following section provide example of the basic user interface design guidelines.

Evolution of the User Interface

When developing older systems,analytics typically designed all the printed and screen output first, then worked on the input necessaries to produce the results. Often the user interface mainly consisted of process and control screen that allowed the user to send commands to the system. The approach worked with traditional systems that simply transformed input data into structured output.
As information management evolved from centralized data processing to dynamic,enterprise wide systems themselves. The Information Technology Group department to the user themselves. The Information Technology Group became a supplier of information technology rather than supplier of information.
Today the main focus is an on user within and outside the company, how to they communicate with the information system .How the system process support the firms business operations.The Information Technology department which was the main inrface for user information requests has been become a system facilitator that maintains and support the the info system for its users.


In a user interface system,the distinction blurs between input abd output interface itself. Most users work forwith the varied mix of input,screen,output and data queries as they perform their day to day job functions.All those queries interactions with the computer systems.

SAD: Information of User Interface Design

Although output design involves a separate set of physical design issues, it’s an integral part of a larger concept called a user interface. A user Interface describes how to users intract with a computer system, hardware, software, output, function and features that affect two way communications between the user and computer.