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Avinash Bhagat, Lovely Professional University Unit 1: Introduction to Hardware and Software
Unit 1: Introduction to Hardware and Software Notes
CONTENTS
Objectives
Introduction
1.1 Computer Hardware
1.1.1 Central Processing Unit
1.1.2 Input Devices
1.1.3 Output Devices
1.1.4 Storage Devices
1.2 Network System
1.2.1 Types of Networks
1.3 Computer Software
1.3.1 System Software
1.3.2 Application Software
1.4 Summary
1.5 Keywords
1.6 Review Questions
1.7 Further Readings
Objectives
After studying this unit, you will be able to:
Explain the concept of Computer Hardware
Discuss the Input and Output Devices
Describe network system
Explain the concept of Computer Software
Introduction
A computer is a combination of two terms Hardware and Software. The physical components of
a computer are called hardware. Pieces of hardware may be categorized according to the functions
each performs: input, process, output, and storage. Your PC (Personal Computer) is a system,
consisting of many components. Some of those components, like Windows XP, and all your
other programs, are software. Software is the source of interaction between the user and the
computer. It represents programs, collection of several sets of instructions, which allow the
hardware to run properly. The stuff you can actually see and touch, and would likely break if
you threw it out a fifth-story window, is hardware.
1.1 Computer Hardware
Hardware of a computer is made up of complex electronic circuits. For a user the details of the
circuitry are not important. However, the hardware units with which a user has to interact must
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