LEARN WITH COMPUTER

Reach the Unreachable

VAPS KNOWLEDGE SERVICES PVT.LTD.

No.72, MIG 1st Stage, 4th Cross, KHB Colony, Basaveshwaranagar, Bangalore-560079Ph: 080-2301 2900 To 926,Tele Fax:(080)2301 2904 E-mail:contact@vapstech.com,

www.vapsknowledge.com

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LEARN WITH COMPUTER – II

Reach the Unreachable

FIRST Edition in 2010

All rights reserved. No part of thisPublication may be reproduced, transmitted, storedIn a retrieval system or translated into any language or Computer language, in any form or by any means, electronic , mechanical, Magnetic, optical, chemical, manual, photocopy or otherwiseWithout the prior permission of the publishers.

Price : Rs. 160.00

Computer education has become, of late , an integral part of early general education . Computer technology has revolutionized our way of life to such an extent that parents desire that their children get exposed to computers from the very early stages of education . In view of this growing indispensability of providing computer education even during the primary stages of education , simple books of computer education which can enable the children to learn the computer skills at an early age, are becoming more and more essential.

VAPS Technosoft (Pvt.) Ltd. Which we know for the past few years, is a software company genially interested in the intellectual development of the young children . it has even incessantly working hard in the direction of providing effective computer education to the children. VAPS Knowledge Services ( Pvt.)Ltd. has done a good job in drawing up a meaningful syllabus and developing good learning material suitable to students of class I to X . We sincerely wish that these books help the children to joyfully learn the fundamentals and skills of computer

We congratulate VAPS Knowledge services (Pvt.) Ltd . on their sincere efforts to promote computer education from the very Primary stage of learning .

We wish them success in their endeavours.

( ) Swami MuktidanandaCorrespondent

Sri Ramakrishna VidyashalaResidential Composite Pre-University College

Mysore

In this electronic age, a knowledge of computers and skills to use this wonderful machine has become indispensable. It is hardly necessary to emphasize the importance and the significant role this wonder machine plays in every walk of life. There is a craze for computer education and it is natural that parents want their children to have a practical knowledge of working with computers at the earliest possible stage.

LEARN WITH COMPUTER Series has 3 books from Volume I to III and these books have been designed with the sole purpose of making learning computers an enjoyable experience to learners. The Series of books is preferred with great care. The books are based on a syllabus draw with meticulous care. VAPS Knowledge Services Pvt.Ltd. is an established firm with more than five years of experience in the field. The syllabus is prepared by renowned computer professionals and academicians. The book has pictures and illustrations at appropriate places and they aid understanding . As we know one illustration is worth a thousand words it can explain facts more clearly.

Examples given with books are drawn from every day life experience which they express. Purpose of aiding better understanding of the subject matter. We have also included variety of activities and exercises keeping in mind the fact that children's are very active and they hate receiving information in a passive manner.

We hope this series of books are going to catch the imagination of young learners and they will take keen interest in this exciting field. This is what we hope to happen and we would feel our selves lucky if we succeed in making learning an enjoyable activity that would give us a sense of fulfillment of our cherished goal.

Editors

ABOUT THE BOOK

1. CLASSIFICATION OF COMPUTERS

2. MS WORD

3. INTERNET

4. MS EXCEL

5. BASIC

6. VIRUS & SECURITY

7. MS POWERPOINT

8. OPERATING SYSTEM

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INTRODUCTION TO COMPUTER ANALOG COMPUTERS DIGITAL COMPUTERS HYBRID COMPUTERS MICRO COMPUTERS MINI COMPUTERS MAINFRAME COMPUTERS SUPER COMPUTERS

I CLASSIFICATION OF COMPUTERS

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1 CLASSIFICATION OF COMPUTERS

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INTRODUCTION OF COMPUTERS

Computer is an electronic device which accepts the data, processes the data and gives the meaningful output.

TYPES OF COMPUTERS:

Based on Operating Principles computers are classified into three types. They are Digital computers, Analog computers and Hybrid computers.

A. Digital Computers

These are high speed programmable, electronic devices that perform mathematical calculations, compare values and store the results. They recognize data by counting discrete signals representing either a high (ON) or low (OFF) state of voltages. All numbers, alphabets and special symbols can be represented by 0's and 1's.

B. Analog Computers

Analog computers recognize data as a Continous measurement of physical properties. Their output is usually in the form of readings on dials or graphs. Voltage, pressure, speed and temperature are some physical properties that can be measured in this way.

Fig: Patch Panel EAI 680 Analog Computer

C. Hybrid Computers

Computer falls into a category in between analog and digital. Because of the special design in processor and memory, some of the operations are performed digitally and some in analog.

CLASSIFICATION OF COMPUTERS:

Based on size, Computers are classified as Micro Computer, Mini Computer, Mainframe computer and Super computers.

As the hardware evolved over the years, different classification schemes were used to classify the machines.

Micro computer:

The personal computers are generally micro computers built for personalized use, and are equipped with user-friendly, personal productivity software.

A work station is a powerful single user computer used for computing intensive work such as complex data analysis, graphic design, engineering applications etc.

Mini computer:

Minicomputers are introduced in the early nd 1960’s aannounced a new era in computing. They are relativelylow cost and small. Mini computers are well adapted for functions such as accounting, word processing, data base management, statistical packages for social sciences. and Numerical Computer Aided Design (CAD)Analysis etc.

Mainframe computers:

Mainframe Computers are very large computers in which all the units like processor or any other are hung into a single frame.

They are used for certain large computing applicationsor enormous data processing. They are typically linked to hundreds or even thousands of terminals for processing huge volumes of on-line transactions.

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Super computers:

Super Computers are meant for specialized numeric computations,intensive Jobs like seismic dataprocessing, weather forecast, nuclear research, space research,defence applications etc. They are also used in banking, manufacturing and data mining operations.

SUMMARY

There are three types of computers, digital computers, analog computers and hybrid computers. The digital computers which can theoretically be used for any type of application are called general purpose digital computers. Analog computers recognize data as a continuos measurement of a physical property. Hybrid computer falls into a category in between analog and digital. The micro computers are personal computers are generally micro computers built for personalized use, and are equipped with user-friendly, personal productivity software. Mini computers are well adapted for functions such as accounting, word processing, data base management, statistical packages for social sciences. Mainframe Computers are used by large organizations' using very large data base operations. Super Computers are meant for specialized numeric computations, intensive Jobs like seismic data processing.

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Super Computers are meant for

specialized numeric computations

Learn With Computer 6TH STD

Publisher : VAPS TECH Author : Panel Of Experts

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