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  Computer Based System

Introduction to Computer Based System

The computer based system has been introduced in the market, many years ago. It has made its powerful place in some decades of time. That the applications were very general like air line reservation. As time pass by such systems are becoming an essential and important part of every task of any organization. The system engineers associated with such system contributed a lot to make them a great success.

As we that the computer based system don t exist in a vacuum. They contain a lot of components to be built. Generally when the software and hardware are kept together in a form f a system. They must interact with human, with software tasks, hardware tasks, databases etc. But as  time pass out their use has gradually  expanded and  now it s seen  that the computer has almost  covered each  and every  area and related applications  of that field of any organization. Small to small or big to big all the works are directly done by the various applications of computer based system. The definition of computer based system given by Webster dictionary is.

A set or arrangement of elements that are organized to accomplish some method. Procedure or control by processing information. So, the computer based systems are the collection of its various elements, as shown in figure below.

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There are total six main elements of any computer based system. A computer based system may be the combination of all or some of these elements. They are described below:

1. Software: Software may be any computer program, data structure or any associated document to accomplish a required task.

2. Hardware: Hardware, element may be any electronic device like CPU, memory   keyboard, VDU, IC etc.

3. Human: Human factor may be the user or operator of the system.

4. Database:  A large, organized collection of information which is associated with   the software and can be accessed through software.

5. Documentation: Report form manual or other descriptive material which describes the various tasks of the system.

6. Procedures; A method or a sequence of steps, to be followed which describes the specific use of each system element or the system itself.

It is not necessary that all of these elements should be collectively combined in a particular manner; rather they can be combined in many ways.

One property of the computer based systems is that  even an element  can act  as a macro element  of the large system , means  it can act as a small  part  of a large system. So this is the system engineer task to define the elements of the computer based system.

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