NCERT Computer: Chapter 4 – Operating System Part 1

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Image of Operating System

Image of Operating System

Image of Operating System

Introduction

An operating system is a program that acts as an interface between the user and the computer hardware and controls the execution of all kinds of programs. A software which performs all the basic tasks like file management, memory management, process management, handling input and output, and controlling peripheral devices such as disk drives and printers.

Some popular Operating Systems include Linux, Windows, OS X, VMS, OS/400, AIX, z/OS, etc.

1. Main Features of Windows 98:

  • Contains as innovation mainly detail improvements and bug fixes.

  • Extended support for the connection to networks.

  • Web optimized, networking through VPN.

  • Handles internal functions, such as managing the computer memory, input and output operations.

  • A Graphical User Interface (GUI).

  • The World Wide Web (WWW) is easily accessible from anywhere in windows.

  • Supports DVD and digital audio, so that you can play high quality digital movies and audio on your computer.

2. Using the Mouse

Windows 98 is designed for use with a mouse. Although, you can use the keyboard for most actions in Windows 98, many of these actions are easier to do with a mouse.

You Will Use Four Basic Mouse Actions Throughout this Course
Use four basic mouse actions image

Use Four Basic Mouse Actions Image

Use four basic mouse actions image

1. Pointing:

Moving the mouse to place the pointer on an item is called pointing.

2. Clicking:

Pointing to an item on your screen and then quickly pressing and releasing the left mouse button is called clicking.

Perform by clicking the right mouse button, but unless you are instructed, click the left mouse button.

3. Double-Clicking:

Pointing to an item and then quickly pressing and releasing the mouse button twice is called double-clicking.

4. Dragging:

Pointing to an item and then holding down the mouse button as you move the mouse is called dragging.

Use this action to select data, and to move and copy text or objects.