Communication and network concepts.

Introduction During the 20th century the key technology has been information gathering m processing and distribution. 1.            Among other developments the installation of worldwide telephone networks, the birth and un-expected growth of the Computer Industry, and the launching of communication satellites. 2.            As we have entered in 21st century, these area rapidly converging. 3.            The old a single computer serving all of the organization needs, is rapidly being reposed...
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Understand the basic concepts of Data Structures

Semantically data can exists in either of the two forms – atomic or structured. In most of the programming problems data to be read, processed and written are often related to each other. Data items are related in a variety of different ways. Whereas the basic data types such as integers, characters etc. can be directly created and manipulated in a programming language, the responsibility of creating the structured type data...
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The basic concepts of Data Structure.

Computer is a machine that manipulates information. The study of Computer Science therefore, inevitably, includes the study of how information is organized in a Computer, how it can be manipulated and how it can be utilized. Thus, it is exceedingly important to understand the concept of information organization and manipulation. Computer Science can be defined as the study of the data, its representation and transformation by a digital computer. A computer...
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Need for Operating System.

 An Operating System is needed because of the following jobs:- 1.            It acts as an interface between User and Computer Hardware. The Operating System assists in the execution of the user programs. The Operating System proves and environment  in which particular Software packages can execute. 2.            it process jobs submitted by user : A user solutions job to the Operating System. A job is the collection of activities several steps. Job steps...
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What is an Operating System ?

  What is Operating System ? Before explaining the concept of Operating System, we will discuss what is Software ?, because Operating System itself is a software. What is Software ? Software is a set of instructions designed to perform a particular task there are two types of Software’s. 1. System Software 2. Application Software The Operating System comes in the category of System Software. As it’s name implies system software...
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Computer is everywhere.

We are surrounded by computers. Many of us have smart-phones, sophisticated gadgets etc. ; most of us are familiar with ATM. Term Internet is known to even the school beginners. Computer controlled factories were already there, then came computer controlled cares and now computer controlled homes are reality. To analyze the impact of computers in our lives. Hey, you all know what computer is. But let us formally define it first....
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