LUCKNOW PUBLIC SCHOOL Study Material Session-2019-20...

INFORMATION TECHNOLOGY (402) CLASS-IX

LUCKNOW PUBLIC SCHOOL

Study Material

Session-2019-20

Class :IX

Subject :INFORMATION TECHNOLOGY(402)

CHAPTERS INCLUDED:

CHAPTER 1: COMMUNICATION SKILLS.

CHAPTER 3: BASIC IT SKILLS

CHAPTER 6: FUNDATMANTAL OF COMPUTERS

TEACHER CONTRIBUTORS:

1. NIMISHA JHA, LPS SOUTH-CITY

2. NITIN SIR,LPS RAE-BARELI

3. ANZILA CHANDRA NAIR, Jankipuram Branch


INFORMATION TECHONOLOGY(402)

CHAPTER-1

Functional English

Introduction

Functional English is usage of English language required to perform a specific function.

It is more about the day to day function use and practicality of the English language.

It is less history and more communication skills. It consists of advertising, marketing, journalism and so much

more.

It provides the essential knowledge, skills and understanding that will enable the user to operate confidently,

effectively and independently in life and at work.

There are some sessions given below which are helpful to understand the functional English more easily:-

SESSION 1: INTRODUCTION ONESELF

Relevant Knowledge:-

1. “I would like to introduce myself. I am ……”

2. “I live at …….”

3. “I am from .……”

4. “I am working as a ………”

5. “I studied at ……….”

6. “My hobbies are ……..”

7. “I like to eat ………”

8. “I am/came here to……..”

Exercise

1. My name is ………………. (include your nam).

And you are?

2. I am a doctor. I work at Safdarjung Hospital.

3. It’s a pleasure to meet you.

4. Her name is Meena . and the two men she is talking to is Manoj and Rahul.

ASSESSMENT

Fill in the blanks:-

1. Hi! I ……… Priya.

a) Is b) am c) are

Ans: am

2. ……………. Am 36 years old.

a) He b) I c) she

Ans: i

3. My parents …………… me very much.

a) Loves b) love c) loving

Ans: love

4. My mother …………… a housewife.


b) are b) is c) am

Ans: is

5. She …………… a very intelligent student.

c) is b) am c) will

Ans: is

SESSION:2

GREETING OTHERS

Relevant knowledge:-

Every interaction starts with some form of greeting. The way we greet, the tone and the language changes

according to our familiarity with the person being greeted.

Given below are some of the statements we generally make whenever we greet someone:-

Greeting a Friend

1. hello! How are you doing?

2. It has been a long time since we last met!

3. How’s life?

Greeting an acquaintance

1. Hello! How are you?

2. Hello! How have you been?

3. Good morning/afternoon! All’s well?

Look at the following sentences-

I greet you every day. You greet me every day. He greets me every day.

We greet you good morning. You all greet us good morning. They greet us good morning.

Do you see any change in the two sets of sentence?

There is a rule which is the reason behind the change

For any subject that is in the third person and singular (Ram,Rita,he,she,it etc.),theverb will take an “s” or “es”

after it.

Examples:-

1. Ram meets new people every day

2. He works as a sales person.

3. Delhi gets rain in the month of july and august.

4. The bus goes to munirka.

For every other subject- first and second person, singular or third person plural (Ram and Rita, they, Delhi and

Bombay, buses, chairs etc.)- The rule will not apply.

Examples:-

1. I meet new people every day.

2. You all Meet new people every day.

ASSESSMENT

1) Hello, Sir! How ………. You?

a) is b) are c) am

Ans: are

2) One of my favorite ways of greeting people ………… “what’s up?”

a)is b) are c) being

Ans: is


CHAPTER 3:BASICS ICT SKILLS

Q1. What do you understand by ICT?

Ans. ICT is an acronym for Information and communication technology. It refers to all devices, networking

components, applications and system that allow people and organisations to interact in the digital world.

ICT comprises all communication technologies such as the Internet, mobile phones, wireless network etc.

Q2. Describe the role of ICT in our daily life.

Ans. ICT facilitates to various services and technologies in our day-to-day lives.

Information Access

E-Banking

Teaching learning process

Entertainment and Art

Social and political causes

Q3. Describe the role of ICT in industries.

Ans. ICT is very helpful to some industries that use robots and AI(Artificial Intelligence) in manufacturing of

products.

ICT used in mining industries for prospecting.

In Auto and aerospace industries for research, design and manufacturing.

In power plant for power generating and distribution.

Q4. How ICT helps in Agriculture?

Ans. ICT is used for communicating vital advance information on weather, soil and analysis useful farming

techniques etc. to farmer.

BASIC COMPONENTS OF COMPUTER SYSTEM

Q6. What are the basic components of computer system?

Ans.-Basic component of computer are –

1. Hardware-Hardware are the physical components like CPU, keyword mouse etc.

2. Software- It is of programs

Q7. Explain about all three important units of computer system.

Ans. The computer system are divided into three basic units

1. Input Unit- The devices use to provide input to the computer, Known as Input unit.

Ex.- keyboard, mouse, scanner, joystick etc.

2. Output unit- A computer process the data and then display the information in human readable form. The

devices that use to display the output after processing such as monitor, printer, speaker etc.

3. Processing unit- CPU is known as the brain of computer system. the CPU receives the data from the user

as input, interprets and executes it, and display the output as information.

Q8. What are the three main components of CPU?


Ans. Three main components of CPU are –

1. ALU( Arithmetic Logic Unit)- It carries out the basic calculation and comparison operation on the data.

2. CU( Control Unit)- It controls and coordinates the functions of the various attached to thr CPU. This unit

does not carry out any actual data processing operation, but is responsible for controlling the transfer of

data.

3. MU (Memory Unit)- It is the principal storage of a computer. It stores both data and instructions.

Q9. Describe two main types of Memory.

Ans.- Two main types of memory are-

1. Internal Memory-It is also called primary memory and main memory. It is the main area in a computer

where data, instruction, and information are stored. It is directly accessed by CPU. This memory consists

of RAM and ROM.

2. External memory- It is also called secondary memory. It refers to the various storage devices connected to

computer. The commonly used devices are hard disk, CDs, DVDs, pen drive etc.

Q10. What do you understand by peripheral devices?

Ans.- There are many internal and external devices that connected to the computer directly and add

functionality to it. These devices are called peripheral devices. Ex. Scanner, scanner, printer etc.

Q11. Give some example of Internal and External peripherals.

Ans.- Internal peripheral- Graphics card, sound card, modem NIC etc.

External peripheral – Printer, monitor Digital camera, smart phone tablets etc.

Q12. Explain the use of MODEM and classify it.

Ans. MODEM stands for ‘Modulator/ Demodulator’. It allow a computer or other devices , such as a router or

a switch to connect internet.

Modem can be classify into two categories-

Internal Modem

External Modem

Q13. Write down the functions of NIC.

Ans. It is the small circuit board used to connect the computer to LAN. It is usually in the form of a card that fits in

an expansion slot on the motherboard of a computer. Every computer that is a part of the network must have at

least one NIC.

Basic Computer Operation

Q15. Classify software in major parts.

Ans.- Software can be classify in two major parts.

Software

System Software Application Software


1. System software- It is a collection of one or more program. That are design to control manage the overall

operation of computer system.

Tis main functions are-

Reading data from input devices

Transmission of information from input to output devices

Checking all internal and external peripheral devices

2. Application software-

Q16. How can we classify system software?

Ans.- System software further can classify into four categories

1. Operating system

2. Device driver

3. Language processor

4. Utility software

Q17. What do you understand by Operating System?

Ans.- The first program that loads on a computer when you switch on the system is called ‘operating system’ .It is

a program that acts as an interface between the software and computer hardware.

Q18. Write down some important functions of operating system.

Ans.- Important function of operating system are as follows

To manage and share the Hardware/software resources

To provide an interface between user and hardware

To communicate between each application

To secure the system and unblock unauthorised access to the system.

Q19. What are the two main components of operating system?

Ans.- Two main components of operating system are-

1. Kernal – Kernal is the core component of the operating system. It acts as an interface between application

and data processing being performed at hardware level.

2. Shell – Shell is the outer part of operating system and user.

Q20. Write down some important functions of operating system.

Ans- Important features of operating system are-

Process management

Memory management

Device management

File management

Security and Protection

Error dection

Q21. What are the different types of operating system?


Ans.- Types of operating system are as follows-

1. Single user operating system

2. Multi user operating system

3. Multitasking operating system

4. Real time operating system

5. Distributed operating system

Q22. Describe the features of DOS.

Ans.- DOS provides a command line interface also known as CUI ( command line interface).

Users can enter the commands in sequence.

Q23. Describe about LINUX operating system.

Ans. – Linux is the operating system that is open source and free. It was developed by Linux Tovalds in 1991. Linux

is the alternative to other costly operating system because of the following important features-

Portable

Open source and free

Multiuser and Multiprogramming

Hierarchical file system

Security and safety


CLASS-9TH

SUBJECT- INFORMATION TECHONOLOGY

CHAPTER-6

FUNDAMENTALS OF COMPUTER

INTRODUCTION:

Computer is an electronic device used in almost every field; even where it is most unexpected.

It is made up of two components –

1) Hardware ;

2) Software

The computer has become very important now-a-days because it is accurate, fast and can accomplish many

tasks easily. It can do very big calculations in just a fraction of a second.

USE OF COMPUTER IN DIFFERENT FIELDS

Today, the computer is used in different fields, which include the following:-

1) Banks

2) Communication

3) Business

4) Medical Science and Health Care

5) Education

6) Media

7) Travel and Ticketing

8) Weather Predictions

9) Sports

10) Arts and Entertainment

11) Social Media

12) Mobile Computing

13) Scientific Research

14) Government

15) Publishing

16) Daily Life

RELEVANT KNOWLEDGE

An automobile such as a car or a van, is available in deferent models and colors, but its essential components

remain same. Similarly, computer are always in various sizes and shapes, but they all have common

components that work in the same manner. The essential components of a computer are hardware and

software.

In this session, you will learn about common computer terminologies, such as hardware, software and many

more things.

A computer system consists of four parts:-

Hardware represents the physical and tangible components of the computer. It includes all input devices,

Processing devices, storage devices and output devices.

Some examples of hardware are as follows:-

a) Hard disk

b) Monitor


c) Motherboard

d) Cables

e) Printers

f) Keyboard

g) Mouse etc.

You use hardware to provide input to a computer and also to get the desired output for eg., whwn you play a

musical instrument, such as piano you provide input by prssing keys and get the desired output in the form of

music.

Similarly, computers also need input and output devices to work on the input data and generate desired

output.

The most important processing device is the CPU (Central Processing Unit)

A Motherboard is a large circuit board that connects input, output and processing devices.

These three steps constitute the data processing cycle-

Input:- Input data is prepared in some convenient form for processing. The form will depend on the processing

machine.

For ex. When electronic computer are used, the input data could be recorded on any one of several types of

input medium, such as magnetic disks, tapes and so on.

Processing: - In this step input data is changed to produce data in a more useful form.

For ex. Paychecks may be calculated from the time cards, or a summary of sales for the month may be

calculated from the sales orders.

Output: - The results of the proceeding processing step are collected.

The particular form of the output data depends on the use of the data.

For ex. Output data may be paychecks for employees.

The relationship betn diffn hardware components

Language Processors:-

Assembler

Interpreter

Compiler

SOFTWARE

Software represents the set of programs that govern the operation of a computer system and make the

hardware run.

Software sends instructions to the hardware to perform the necessary tasks.

CP

Memory Unit

Control Unit

Arithmetic &

logic Unit

Input Unit Output Unit


SOLVED EXERCISES

Q1. What is Computer? Ans. Computer is derived from a Latin word “computare” which means to “to calculate”, “to count”, “to

sum up” or “to think together”. So, more precisely the word computer means a “device that performs

computation”.

A Computer is programmed device with a set of instructions to perform specific tasks and generate results

at a very high speed.

Q2. What are the components of Computer? Ans. A computer is made up of two components - one is the hardware and the other is the software.

Q3. What is Hardware? Ans. Computer hardware is the collection of physical parts of a computer system.

It includes all input devices, processing devices, storage devices, and output devices. The keyboard,

mouse, motherboard, monitor, hard disk, cables, and printer are all examples of hardware. Computer

hardware is what you can physically touch.

Q4. What is Software? Ans. Software is a set of instructions, data or programs used to operate computers and execute specific

tasks. Examples of Software are Operating System, MS Office etc. The programs and languages used by

the computer are called software.

Q5. What are the Characteristics of Computer?

Ans. The Characteristics of Computer are- a. Speed: - As you know computer can work very fast. It takes only few seconds for calculations that we

take hours to complete. You will be surprised to know that computer can perform millions (1,000,000) of

instructions and even more per second.

b. Accuracy: - The degree of accuracy of computer is very high and every calculation is performed with

the same accuracy. The errors in computer are due to human and inaccurate data.

c. Diligence: - A computer is free from tiredness, lack of concentration, fatigue, etc. It can work for hours

without creating any error. If millions of calculations are to be performed, a computer will perform every

calculation with the same accuracy. Due to this capability it overpowers human being in routine type of

work.

d. Versatility: - It means the capacity to perform completely different type of work. You may use your

computer to prepare payroll slips. Next moment you may use it for inventory management or to prepare

electric bills.

e. Storage: - The Computer has an in-built memory where it can store a large amount of data. You can

also store data in secondary storage devices such as floppies, which can be kept outside your computer

and can be carried to other computers.

Q6. What are the limitations of Computer?

Ans. The Limitations of Computer are: a. Power of Remembering: - Computer has the power of storing any amount of information or data. Any

information can be stored and recalled as long as you require it, for any numbers of years. It depends

entirely upon you how much data you want to store in a computer and when to lose or retrieve these data.

b. No IQ: - Computer is a dumb machine and it cannot do any work without instruction from the user. It

performs the instructions at tremendous speed and with accuracy. It is you to decide what you want to do

and in what sequence. So a computer cannot take its own decision as you can.

c. No Feeling: - It does not have feelings or emotion, taste, knowledge and experience. Thus it does not

get tired even after long hours of work. It does not distinguish between users.

Q7. Name some fields were computers are use? Ans. Today, the computer is used in different fields, which include the following:

a. Banks

b. Communication

c. Business


d. Medical Science and Health Care

e. Education

f. Media

g. Travel and Ticketing

h. Weather Predictions

i. Sports

j. Arts and Entertainment

k. Social Media

l. Mobile Computing

m. Scientific Research

n. Government organization

o. Publishing

p. Daily Life

Q8. What is Motherboard? Ans. A motherboard is one of the most essential parts of a computer system. It holds together many of the

crucial components of a computer, including the central processing unit (CPU), memory and connectors

for input and output devices. It is Hardware.

Q9. What is Operating System? Ans. An operating system is a powerful, and usually large, program that controls and manages the

hardware and other software on a computer. All computers and computer-like devices require operating

systems, including your laptop, tablet, desktop, smartphone, smart watch, and router.

Some examples include versions of Microsoft Windows (like Windows 10, Windows 8, Windows 7,

Windows Vista, and Windows XP), Apple's macOS (formerly OS X), Chrome OS, BlackBerry Tablet

OS, and flavors of the open source operating system Linux.

Q10. What is Program? Ans. A computer program is a list of instructions that tell a computer what to do. Everything a computer

does is done by using a computer program. A computer program is written in a programming language.

Some examples of computer programs:

Operating system

A web browser like Mozilla Firefox and Apple Safari can be used to view web pages on the

Internet.

An office suite can be used to write documents or spread sheets.

Video games are computer programs.


Q11. What is Data? Ans. Computer data is information processed or stored by a computer. This information may be in the

form of text documents, images, audio clips, software programs, or other types of data. Computer data

may be processed by the computer's CPU and is stored in files and folders on the computer's hard disk.

Q12. What is Networks? Ans. A network consists of two or more computers that are linked in order to share resources (such as

printers and CDs), exchange files, or allow electronic communications. The computers on a network may

be linked through cables, telephone lines, radio waves, satellites, or infrared light beams.

A typical network has the following three components:

Server: The main computer on a network that provides services to other computers on the network. A

server decides which computers are to be allowed to access the hardware and software on the network.

Workstation: A computer connected to a network. You use a workstation to access the hardware and

software on a network.

Communication channel: A path or link that connects computers or peripheral devices, such as printers

and disk drives, to transfer information. Cables are commonly used as communication channels in a

network, but networks can also transfer information through wireless connections.

Q13. What is Intranet? Ans. The Internet is a worldwide collection of public networks that are linked to each other for

information exchange. The Internet started as a network to facilitate communication between government

and educational departments in the United States. When other networks were connected to this network, it

became a vast medium for exchanging information and ideas.

Today, the Internet connects many commercial, government, and educational networks, as well as

individual computers, which share data. The Internet offers a range of services to its users, such as file

transfers between Internet users and electronic mail for sending messages.

The World Wide Web (WWW), or the Web, is another service that the Internet provides.

Q14. What is Intranet? Ans. Many organizations use a special type of network to communicate and share information within the

organization. Such a network is called an intranet. An intranet is similar to the WWW but is accessible

only to authorized users of the organization. An intranet is much smaller than the Internet and can provide

services such as document distribution, software distribution, access to databases, and training.

Mrs. Anzila Chandra Nair

Jankipuram Branch

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