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Avinash Bhagat, Lovely Professional University Unit 1: Data Information

Unit 1: Data Information Notes

CONTENTS

Objectives
Introduction
1.1 Transforming Data into Information
1.1.1 Functional Units
1.2 Data Representation in Computer
1.2.1 Decimal Representation in Computers
1.2.2 Alphanumeric Representation
1.2.3 Computational Data Representation

1.2.4 Fixed Point Representation
1.2.5 Decimal Fixed Point Representation
1.2.6 Floating Point Representation
1.3 Summary
1.4 Keywords
1.5 Self-Assessment Questions

1.6 Review Questions
1.7 Further Reading

Objectives

After studying this unit, you will be able to:
• Explain data into information

• Discuss data representation in computer
Introduction

The computer accepts data as an input, stores it process it as the user requires and produces
information or processed data as an output in desired format.
The use of Information Technology (IT) is well recognised. The IT has become must for the
survival of the business houses with the growing information technology trends. Computer is
one of the major components of an Information Technology network and gaining increasing
popularity. Today, computer technology has permeated every sphere of existence of modern
man. From railway reservations to medical diagnosis; from TV programmes to satellite launching;
from matchmaking to criminal catching—everywhere we witness the elegance, sophistication
and efficiency possible only with the help of computers.
Basic computer operations are: (i) it accepts data or instruction by way of input, (ii) it stores data,
(iii) it can process data as required by the user, (iv) it gives results in the form of output, and
(v) it controls all operations inside a computer.

LOVELY PROFESSIONAL UNIVERSITY 1