The document provides an overview of computer hardware and software. It defines computer hardware as the physical parts of a computer including input devices, the processor, output devices, main memory, and secondary storage. It notes that computer software provides step-by-step instructions to solve problems and can be categorized as system software or application software. System software includes operating systems, which manage the overall computer operations. Application software is designed to accomplish specific tasks for users. The document also briefly explains that a compiler is a type of system software that translates source programs into object programs.

1. R.D.SIVAKUMAR,M.Sc.,M.Phil.,M.Tech.,
Assistant Professor of Computer Science&
Assistant Professor and Head, Department of M.Com.(CA),
AyyaNadar Janaki AmmalCollege,
Sivakasi – 626124.
Mobile: 099440-42243
e-mail : sivamsccsit@gmail.com
website: www.rdsivakumar.blogspot.in
COMPUTERHARDWARE AND SOFTWARE

2. COMPUTERHARDWARE
ENIAC
Computer Hardware is a Physical parts of the computer.
Input devices
• Enter the Program & data.
• Send it to Processing Unit.
Processor (CPU)
• Manipulates Input data.
• Executes Computer
Instructions.
Output devices
• Processed Data.
• Result of Processing.
Main Memory
• Fetches the
Information
Secondary
Storage
• Permanently
stored data
and programs.
COMPUTERHARDWARE AND SOFTWARE
INTRODUCTION

3. COMPUTER SOFTWARE
ENIAC
Computer Software is a step-by-step Instruction to solve a problem.
Computer Software
(set of Instruction)
System Software
• It is a General Program.
• It Provide environment to
run the application
program.
• Ex. Operating system.
• OS manage the overall
operations of a computer.
Application Software
• Programs designed to solve a
user problem.
• It accomplish specific task.
• It controlled by system
software.
• It manages hardware
devices.
SOFTWARE CATEGORIES
Hardware
SYSTEM SOFTWARE

4. COMPILER
ENIAC
The Compiler software translates the source program into an object program .