Punjab School Education Board
Subject:- Computer
Science
Year: 2025-26
Class: 6
Lesson: 1 Fundamentals of Computer
Exercise
A. Multiple Choice Questions
1. Which of the following is not a part of the IPO cycle?
A) Processing B)
Input Unit C) Output Unit D) Speed
2. Which is not a characteristic of a computer?
A) Accuracy B) No
IQ C) Diligence D) Storage
3. Which part of the computer system is responsible for
performing calculations and logical operations of the computer?
A) Memory B)
ALU C) Control
Unit D) None of the above
4. Which memory of the computer can be directly accessed
by the CPU?
A) Primary Memory B) Auxiliary Memory C)
Secondary Memory D) CD/DVD
5. Which portable computing device is usually equipped
with features like camera, large storage capacity, and high processing speed?
A) Smart Phone B)
Tablet Computer C) Laptop D) All of the above
B. Write True or False for the following statements:
1. A computer cannot make any decision on its own. (True)
2. Personal computers are also called microcomputers. (True)
3. Output devices are used to display information generated
by a computer or other electronic device. (True)
4. Primary memory is also called auxiliary memory or
external memory. (False)
5. You Tube, 3D and VR devices are popular in the
entertainment industry. (True)
C. Write the full names:
1. RAM - Random access memory
2. ROM - Read only memory
3. CPU - Central processing unit
4. HDD - Hard disk drive
5. ALU - Arithmetic logic unit
6. GB - Giga byte
7. MB - Mega byte
D. Short answer questions.
Question 1. Define computer.
Answer:- A computer is an electronic device that processes data into information according to specified instructions (programs). It performs mathematical and logical operations and provides results. A computer works at high speed and is used in various fields, such as education, business, medicine and science.
Question 2. What is the role of ALU in a computer?
Answer:- ALU (Arithmetic Logic Unit) is used to perform mathematical and logical operations in a computer. It performs mathematical operations like addition, subtraction, multiplication, division etc. It handles logical operations like AND, OR, NOT, XOR etc. ALU compares two numbers and gives the result. It is an important part of CPU which plays a major role in data processing.
Question 3. Write any four characteristics of a computer?
Answer:-
• High Speed
• Accuracy
• Large Storage Capacity
• Ability to work continuously (Diligence)
Question 4. What is the role of a computer in the field
of education?
Answer:- Computer plays an important role in the education sector. It is used for online learning, smart classrooms, and research. Students can access digital learning materials with its help. It is also very helpful in online assignments, tests, and administrative tasks.
Question 5. What are secondary memories?
Answer:- Secondary Memory is the memory that is used to store data for a long time. It is slower than primary memory (RAM) but has a larger storage capacity.
Examples:
- Hard Drive (HDD, SSD)
- USB Drive (Pen Drive, Flash Drive)
- Memory Card
- CD, DVD
- Cloud Storage
The main purpose of secondary memory is to store data for a long time and provide backup.
Question 6. What do you mean by portable devices?
Answer:- Portable devices are electronic devices that are lightweight, easily portable, and can run on batteries.
Examples:
- Smartphones, laptops, and tablets
- USB drives and external hard disks
- E-readers
- Smartwatches and fitness bands
E. Long answer questions.
Question 1. Explain in detail the use of computers in
daily tasks.
Answer:- Use of Computer in Daily Work:- Computer has become an integral part of modern life. It is not only used for office work but also plays an important role in daily personal and business work. Given below are some of the main areas where the use of computer has become very common.
1. Office work and management
- Computers are used in offices for document preparation, data storage, and communication.
- Software like Microsoft Office (Word, Excel, PowerPoint) are used to increase efficiency.
- Communication is done easily through email and video calls.
2. Education and Research
- Students and teachers adopt a new way of learning with the help of online learning, e-books, and online lectures.
- Students can submit assignments online through computers.
- Access to libraries and educational resources has become easier.
3. Entertainment
- People use computers to watch movies, songs, and play games.
- Entertainment has become easier through OTT platforms (Netflix, Amazon Prime).
- People stay connected to the world through social media (Facebook, Instagram, YouTube).
4. Business and e-commerce
- People shop online (Amazon, Flipkart) through computers.
- Computers are used to maintain accounts, transact, and store business documents in businesses.
- E-commerce websites and apps provide great opportunities for businessmen.
5. Banking and financial transactions
- Transactions have become easier through online banking, digital payments (UPI, PayPal, Google Pay).
- People can pay bills, check balances, and get information about new schemes while sitting at home.
6. Medical sector
- Computers are used in hospitals for maintaining patient records, online consultation (Telemedicine), and digital reporting.
- Doctors also use computers for diagnosing diseases, scanning, and medication information.
7. Science and Technology
- Computers are important for new research and technological development.
- Computers are used by NASA and other scientific organizations for astronomy and aircraft development.
Question 2. Draw a block diagram of a computer system and
explain all its parts?
Answer:- Block diagram of a computer system and its parts:- A computer is an electronic machine that processes data and converts it into useful information. It is made up of several parts that work together.
1. Input Unit:- This part refers to the devices that enter data or instructions into the computer.
Example: Keyboard, Mouse, Scanner, Microphone
2. Central Processing Unit (CPU):- The CPU is the "brain" of the computer, which handles all the tasks. It is divided into three parts:
(a) Arithmetic and Logic Unit (ALU):- It performs mathematical (Addition, Subtraction, Multiplication, Division) and logical (AND, OR, NOT) operations.
(b) Control Unit (CU):- It gives instructions to all the parts of the system. It determines which process should be executed at what time.
(c) Registers:- These are small and fast memories, which are used to store data immediately.
3. Memory Unit:- It is used to store data and instructions.
(a) Primary Memory:-
- RAM (Random Access Memory): Temporary memory, which stores data as long as the computer is running.
- ROM (Read Only Memory): Permanent memory, in which the basic instructions (BIOS) of the computer are stored.
(b) Secondary Memory
Hard Disk, SSD, Pen Drive, CD/DVD etc., which can store data for a long time.
4. Output Unit:- These devices are used to convey the information stored in the computer to the user.
Example:
- Monitor
- Printer
- Speakers
Question 3. What are the differences between primary
memory and secondary memory?
Answer:-
|
Characteristics |
Primary
Memory |
Secondary
Memory |
|
Speed |
Fast |
Slow |
|
Data Storage |
Temporary |
Permanent |
|
Examples |
RAM, ROM |
HDD, SSD,
USB, CD/DVD |
|
CPU Access |
Direct |
After
Processing |
|
Cost |
Expensive |
Cheap |
Question 4. Describe the different types of computers?
Answer:- different
types of computers are:-
1. Supercomputer: A supercomputer is a computer that is very large in size and is considered the largest computer in the world. These computers are very fast and complete their tasks in a very short time. Supercomputers are used to process large amounts of data. This computer is considered the most powerful computer in the world because the performance of the processor of this computer is very good. Thousands of processors are interconnected in a supercomputer due to which it can perform any task at a high speed.
This computer is used to complete scientific and engineering related tasks such as: - Weather forecasting, and research etc. Some of its famous examples are: - PARAM 8000, and NUDT Tianhe-2 etc.
2. Mainframe Computer: Mainframe computers are large in size and are used to store large amounts of data. Mainframe computers have high functionality. Its size is larger than mini and micro computers. It is a multi-user computer so it can be used by more than one user at a time. This computer was invented by IBM (International Business Model) in the 1950s. This computer is used in large companies and government offices to store large amounts of data. However, these computers are also quite expensive. Examples of this: – IBM zSeries, System z9 etc.
3. Mini Computer: Mini is a special type of computer whose size is neither too small nor too big. This computer is larger than micro computer but smaller than mainframe computer. It is a multi-user computer. This means that this computer can be used by one or more users at a time. Apart from this, it is also a multi-tasking computer, that is, more than one task can be done in this computer at a time.
Examples of mini computers: - IBM AS/400, and Honeywell 200 etc.
4. Micro Computer: A micro computer is a computer that can be used by only one person at a time. The size of this computer is quite small. It is much smaller than mini and mainframe computers. Apart from being lightweight, it is also very cheap. Micro computer is multitasking which means that the user can do many tasks on this computer at the same time like surfing the internet, working in words and listening to songs etc. Some of the popular examples of this are - Laptop, Smart phone, Tablet etc.
Solve these scramble words:
1. UCP Ã CPU 8. ROICM Ã MICRO
2. TCOUREPM Ã COMPUTER 9. INIM Ã MINI
3. DCL Ã LCD 10. UPESR Ã SUPER
4. EMYRMO Ã MEMORY 11. OTRBLPEAÃ PORTABLE
5. ARIRYMP Ã PRIMARY 12. LEOMIB Ã MOBILE
6. RCYESODAN Ã SECONDARY 13. TBLETA Ã TABLET
7. DAGLTH Ã DIGITAL
Lesson: 2 Working with Computer Systems
Exercise
A. Multiple Choice Questions:
1. Which of the following is not a part of the desktop?
(a) Wallpaper (b)
Taskbar (c) Icons and Shortcuts (d) Run Box
2. A computer system consists of _____.
(a) Software only (b)
Hardware only (c) Hardware
and Software (d) None of
these
3. Which of the following operating systems is mostly
used in mobile phones?
(a) Windows (b)
Android (c) DOS (d) None of these
4. The main screen that appears after logging in is
called _____.
(a) Taskbar (b)
Wallpaper (c) Background (c) Desktop
5. Which of the following is a part of the taskbar?
(a) Start button (b)
Notification area (c) Search box (c) All of the above
B. Fill in the blanks:
1. ______ is the default text editor application of
Microsoft Windows.
Answer:- Notepad
2. Recycle bin is an area where ____ files or folders are
temporarily stored.
Answer:- Deleted
3. ______ are a type of icon that has a small arrow
symbol on the bottom-left corner.
Answer:- Shortcuts
4. Android is a mobile operating system developed by
_____.
Answer:- Google
5. Taskbar is a long horizontal bar that usually appears
below ______.
Answer:- the desktop
6. _____ is a group of programs that are used to perform
a particular task.
Answer:- Software
C. Short Answer Questions:
1. What is a computer system?
Answer:- Computer system – A computer system is an electronic device used for processing, storing, and communicating data. It works with a combination of **Hardware** such as CPU, memory, and **Software** such as Windows, MS Office, etc. **Input unit** (keyboard, mouse) is used to send data, **Output unit** (monitor, printer) is used to display results, and **Memory** (RAM, Hard Disk) is used to store data. It plays an important role in education, business, medicine, and science.
2. What is booting?
Answer:- Booting – Booting is the process in which the operating system (OS) is loaded into RAM when the computer is turned on. This process is initiated by the BIOS, which checks the hardware and prepares the computer to run. Cold booting (shutdown and restarting) and warm booting (restarting) are the main types. Booting is essential for the proper functioning of the computer.
3. What is the desktop? Write the names of the components
of the desktop.
Answer:- Desktop – The desktop is the main screen of the computer, which appears after the operating system loads. It contains icons, a taskbar, a start menu, and a recycle bin. The taskbar displays information about running applications and the system tray displays information about battery, WiFi, and volume. The desktop provides the user with an interface to easily work with the computer.
Components of the desktop:
• Icons
• Taskbar
• Wallpaper
• Shortcuts
4. What are icons? Write the names of any three icons.
Answer:- Icons – Icons are small graphic symbols that represent files, folders, or applications. They help the user quickly access any program or document. Three examples: (1) My Computer (This PC) – to view drives and files, (2) Recycle Bin – to store deleted files, (3) Google Chrome – to use the Internet.
5. What is the Recycle Bin?
Answer:- Recycle Bin – The Recycle Bin is a special folder in the Windows operating system that is used to temporarily store deleted files and folders. If a file is accidentally deleted, it can be restored from the Recycle Bin.
6. How to shut down a computer system?
Answer:- To shut down a computer system steps are:
• Click on Start Menu.
• Select Shut Down from Power Option.
• The computer will automatically shut down.
Q. Long Answer Questions:
1. What is an operating system? Explain them according to
the types of interfaces?
Answer:- Operating System:- An operating system (OS) is a system software that provides a common platform between the hardware and software of a computer. It is the primary means of communication between the user and the computer. It helps in managing all the resources of the computer, running programs and storing data.
Key functions of an operating system:
- Process Management: Manages the processes running by the CPU.
- Memory Management: Manages the space available in RAM.
- Storage Management: Maintains files and data properly.
- Device Management: Communicates with input/output (I/O) devices.
- User Interface: Provides the user with an interface for interaction with the computer.
Types of Interfaces
1. Command Line Interface (CLI):- CLI is an interface
in which the user issues commands by typing. Example: MS-DOS, Linux Terminal
2. Graphical User Interface (GUI):- GUI consists of
icons, buttons, and graphical elements, which are used through a mouse or touch
screen. Example: Windows, macOS, Android
3. Menu-Driven Interface:- It allows the user to make
choices through menus, rather than commands or icons. Example: ATMs, mobile
settings menu
4. Touch Interface:- This interface is used in
smartphones and tablets, where work is done through touch and gestures. Example:
iOS, Android
2. What are Windows applications? How would you open
commonly used Windows applications using the Run box?
Answer:- Using Windows Applications and Run Box
Windows applications – These are software that run on
the Microsoft Windows operating system. They are used to perform various tasks,
such as:
• MS Paint – Drawing and graphic design
• Notepad – Text editing
• Microsoft Word – For creating documents
• Calculator – For performing calculations
Using Run Box:- Run Box is a quick way through which
you can open various Windows applications.
Steps:
1. Press Windows + R keys.
2. Run Box will open.
3. Type the required command to open, for example:
- · Notepad (to open Notepad)
- · mspaint (to open MS Paint)
- · calc (to open Calculator)
- · cmd (to open Command Prompt)
4. Press Enter.
This way you can easily open various Windows applications
instantly.
Lesson - 3 Introduction to Tux Paint
Exercise
Objective
Questions
A. Fill in the blanks with a choice of the following
words:
[Undo, Left, Portable, Open-Source, Stickers]
1. Tux Paint is _____ software created by Bill Kendrick.
Answer:- open source
2. Tux Paint is ______ software that can be run on
various computer platforms: Windows, Macintosh, Linux, etc.
Answer:- portable
3. Toolbar is a vertical bar present on the ______ side
of the main screen interface.
Answer:- left
4. Stamp tool is like a set of rubber stamps or _________.
Answer:- stickers
5. Clicking on the button will ______ the last drawing
action.
Answer:- undo
B. Select the correct option:
1. Which of the following is not available as a tool on
the Tux Paint toolbar?
(a) Stamp (b)
Magic (c) Color Picker (d) Eraser
2. There is an area in which we can draw images.
(a) Toolbar (b)
Canvas (d) Help Area (d) Color Palette
3. Which of the following is not an element of the Tux
Paint interface?
(a) Toolbar (b)
Help Area (c) Drawing Canvas (d) Scroll Bar
c. Short Answer Questions:
1. What is Tux Paint?
Answer:- Tux Paint is a free, open-source and easy-to-use drawing software, specially designed for children. It comes with a colorful interface, fun sounds, various brushes, and a magic tool, which helps children in art and creativity. The stamp tool is used to add ready-made charms. Tux Paint is an easy and fun way for children to draw and color.
2. Write the features of Tux Paint.
Answer:- features of Tux Paint are:-
• Easy and interactive interface
• Various drawing tools like stamp, magic, eraser etc.
• Many color and brush options
• Undo/Redo function
• Facility to save in different image formats
3. Write the names of various elements of Tux Paint
interface.
Answer:- the names of various elements of Tux Paint
interface are:-
• Toolbar
• Color Palette
• Canvas
• Help Area
4. What do you know about Tux Paint color palette?
Answer:- The Color Palette in Tux Paint is a simple and easy-to-use tool that allows users to choose different colors. It is located at the bottom of the screen, from where users can select different shades and hues. It works with the Brush, Fill, and Magic Tools to help beautify images. The Color Palette makes the coloring experience colorful and fun for kids.
5. Write the names of any 6 tools of Tux Paint toolbar.
Answer:- the names of any 6 tools of Tux Paint toolbar are:-
• Pencil
• Eraser
• Stamp
• Magic
• Line
• Shapes
Lesson - 4 Working with Tux Paint Tools
Practice
Objective
Questions
A. Fill in the blanks using the following options
correctly:
[Paint, Text, Lines, Shapes, Stickers]
1. The ____ tool is used to draw straight lines in Tux
Paint.
Answer:- Lines
2. The Stamp tool is like a set of rubber stamps or
_____.
Answer:- Stickers
3. The _____ tool is just like a brush, which is used to
create freehand drawings.
Answer:- Paint
4. Text entered using the _____ tool cannot be edited or
changed later.
Answer:- Text
5. We can use the _____ tool to create a circle in Tux
Paint.
Answer:- Shape
B. Write the shortcut keys for the following commands:
1. Redo
2. Open
3. Save
4. Print
5. Quit
Answer:-The shortcut keys for the following commands are:
1. Redo → Ctrl + Y
2. Open → Ctrl + O
3. Save → Ctrl + S
4. Print → Ctrl + P
5. Quit → Ctrl + Q
C. Select the correct option:
1. Which of the following tools of Tux Paint can be used
to enter text in a drawing?
A. Label B.
Text C. Both A and
B D. None of these
2. Which of the following options is available for the
Stamp tool?
A. Mirroring B.
Rotation C. Flipping D. All of the
above
3. The tool allows us to create some simple filled and
un-filled shapes in Tux Paint?
A. Fill B.
Pick Color C. Shapes D. Label
4. Which shortcut key is used to create a new drawing in
Tux Paint?
A. Ctrl+O B.
Ctrl+S C. Ctrl+N D. Ctrl+D
5. Which of the following options is not provided by the
Fill tool of Tux Paint?
A. Brush B.
Shaped C. Radial D. Lines
Lesson - 5 Computer Hardware and Software
Exercise
Multiple Choice Questions:
1. A computer system is a combination of parts.
(a) Motherboard, Processor (b) Input, Output
(c) Motherboard, Processor (d) RAM, ROM
2. What is the set of computer programs used to perform
various tasks on a computer called?
(a) Instructions (b) Processor (c) Software (d)
Hardware
3. Which of the following is a type of system software?
(a) Operating software (b) Utility software (c) Application
software (d) Both (a) and (b)
4. Microsoft Word and Excel are examples of _____.
(a) Operating system (b) System software (c) Utility
software (d) Application software
5. Which of the following is an internal hardware
component of a computer system.
(a) Keyboard (b) System Unit (c) Mouse (d) Motherboard
6. ____ Software controls the overall operation and
internal workings of a computer system.
(a) Utility Software (b) Application Software (c)
System Software (d) All of the above
Write the full forms of the following:
1. VDU – Visual Display Unit
2. LCD – Liquid Crystal Display
3. RAM – Random Access Memory
4. PCB – Printed Circuit Board
5. SMPS – Switched Mode Power Supply
Short Answer Questions:
Question 1. What is hardware?
Answer:- Hardware is all the parts of a computer that we can touch and see. There are two types: Input Devices, such as keyboards and mice, and Output Devices, such as monitors and printers. The CPU, memory (RAM), and hard disk are also parts of hardware. Hardware helps the computer run software and process data.
Question 2. What is software?
Answer:- Software is the instructions and programs that help a computer run and perform various tasks. It is of two types: 1. System Software, such as operating systems (Windows, Linux), and 2. Application Software, such as MS Word, Photoshop. Software works together with the computer's hardware and processes the user's instructions.
Question 3. Write the categories of software and their
examples?
Answer:-Categories of software and their examples
• System software – (eg: Windows, Linux, macOS)
• Application software – (eg: MS Word, Photoshop, VLC
Player)
• Utility software – (eg: Antivirus, Disk Cleanup)
Question 4. Write the name of the devices connected to
the motherboard?
Answer:-Devices connected to the motherboard
1. CPU (Central Processing Unit)
2. RAM (Random Access Memory)
3. Hard Disk Drive (HDD) / Solid State Drive (SSD)
4. Power Supply Unit (PSU)
5. Graphic Card (GPU)
Question 5. What is application software?
Answer:-Application software is a type of software designed to perform specific tasks for users. It includes programs like MS Word (for document creation), Photoshop (for image editing), and VLC Media Player (for playing videos). Application software runs on top of the operating system and helps users complete tasks efficiently. It can be productivity software, entertainment software, or utility tools, depending on its purpose.
Long answer questions
Question 1. Write tips for taking care of hardware
devices?
Answer:- Tips for taking care of hardware devices:- It is very important to take proper care of hardware devices, so that they can work well for a long time. Below are some important tips, which can be helpful in increasing the life of computers, mobiles, printers, and other devices.
1. Cleaning & Dusting
✅ Clean the hardware regularly. Dust and dirt can get stuck in the ventilation holes of the computer or mobile, which reduces their performance.
✅ Use Microfiber Clothing or Soft Brush to clean the keyboard, mouse, and monitor.
✅ Clean the fan and heat sink of the CPU and laptop with the help of an air blower, so that the cooling system works properly.
2. Proper Temperature & Placement
✅ Always keep the computer or laptop in a ventilated place, so that it does not get hot.
✅ Do not keep in direct sunlight, cupboards or closed places, as they can get too hot.
✅ Protect headphones, mobiles, and other electronic devices from moisture.
3. Proper Usage
✅ Connect and disconnect USB and other cables wisely, while the computer or mobile is on.
✅ Avoid pressing the power button unnecessarily or forcefully shutting down, as this can damage the hard disk and operating system.
✅ Charge the laptop or mobile properly, always use the original charger.
4. Antivirus & Software Updates
✅ Install antivirus software to avoid viruses and malware.
✅ Update the operating system and drivers to the latest version to ensure good computer performance.
✅ It is important to take backups regularly, so that data is not lost.
5. Power Supply Maintenance
✅ Use an inverter or UPS, so that the computer does not turn off suddenly during load shedding.
✅ The power circuit should be safe, where a surge protector is used, so that the hardware can be protected from high voltage.
✅ Keep the laptop and mobile charger in a cool place, avoid overheating.
Question 2. What is software? Explain the different types
of software?
Answer:- Software is the instructions and programs that command the computer to perform various tasks. It works in conjunction with the hardware and carries out the commands of the user. Without software, a computer, laptop or mobile cannot do any work.
Example: Windows, MS Office, Photoshop, VLC Media Player, Games, Web Browsers (Google Chrome, Mozilla Firefox) etc.
Main Types of Software:- Software is mainly divided into two types:
I. System Software:- These are the software that help the computer to run and other software to work.
(1) Operating System:- This is the most important software of the computer, which acts as a bridge between the hardware and the user.
Example: Windows, macOS, Linux, Android, iOS etc.
(2) Utility Software:- These software are used to increase the performance and maintenance of the computer.
Example: Antivirus (Quick Heal, McAfee), Disk Cleanup, WinRAR (File Compression Software), Backup Software etc.
II. Application Software:- These software are made to meet the specific needs of the user.
(1) General Purpose Software:- These application software are used for general tasks, such as creating documents, editing images, and playing videos etc.
Example: MS Word, MS Excel, MS PowerPoint (Office Work)
Adobe Photoshop (Image Editing)
VLC Media Player (Video & Audio Playing)
(2) Special Purpose Software:- These are designed to perform specific tasks, such as banking, medical, or accounting etc.
Example: Tally (Accounting Software)
Hospital Management System (HMS) (Hospital Data Management)
AutoCAD (Engineering & Architecture Design)
(3) Gaming & Entertainment Software:- These are made for entertainment and games.
Example: PUBG, Minecraft, Call of Duty, GTA etc.
(4) Web Browsers:- These are used to visit websites on the internet.
Example: Google Chrome, Mozilla Firefox, Microsoft Edge, Safari etc.
Question 3. Write the difference between application
software and system software?
Answer:- Difference between application software and system
software
|
Characteristics |
Application
software |
System
software |
|
Function |
Helps the
user to perform specific tasks |
Controls the
operation of the computer |
|
Example: |
MS Word,
Excel, VLC Media Player |
Windows,
Linux, MacOS |
|
Importance |
Works
according to the needs of the user |
Very
important to run the computer |
|
How it
runs |
It depends on
the system software |
It works
automatically |
|
For whom
is it made? |
For the
performance of the computer |
For the user |
Lesson - 6 Input Devices
Exercise
Multiple Choice Questions:
1. What is the main function of a keyboard?
(a) Displaying images (b) Entering sounds (c) Entering
text and commands (d) Connecting to the Internet
2. Which of the following devices is used to play games?
(a) Scanner (b) Joystick (c) Microphone (d)
Webcam
3. What does a mouse help you with?
(a) Printing documents (b) Selecting or moving an item
on the screen
(c) Entering videos (d) Scanning images
4. Which input device can recognize voices (voice
commands)?
(a) Webcam (b) Microphone (c) Keyboard (d)
Scanner
5. What is the function of a scanner?
(a) To print documents (b) To convert physical
documents into digital format (c) To listen to music (d) To navigate
web pages
True/False :
1. Microphone is used to record voices. – ✅
True
2. Touchpad is found only on desktop computers. – ❌
False
3. Mouse is used to print documents. – ❌
False
4. Joystick is generally used to play games. – ✅
True
5. Bar code reader is used to fill images in the computer. –
❌
False
6. Webcam is used for video conferencing. – ✅
True
Fill in the blanks :
1._______ is used to control movements in games.
Answer:-Joystick
2. ______ is used to enter text and commands into the
computer.
Answer:-Keyboard
3. Touchpad is usually found in _____ computers.
Answer:-Laptop
4. ______ is a pointing device that allows the user to
navigate the screen.
Answer:-Mouse
5. ______ is used to make video calls or live stream
programs.
Answer:-Webcam
Short Answer Questions:
Question 1. What is the purpose of input devices?
Answer:- Purpose of input devices – Input devices are devices that allow the user to enter data into a computer. These devices are used to send commands or provide information to the computer. Keyboards, mice, scanners, microphones, and touch screens are common input devices. These devices convert the user's commands into signals that the computer can understand.
Question 2. What is the main function of the keyboard?
Answer:- Main function of the keyboard – Keyboard is an important input device that allows the user to type letters, numbers, and special characters. It is a major means of communicating with the computer, consisting of alphabetic (A-Z), numeric (0-9), and function (F1-F12) keys. It enters the user's commands into the computer as input.
Question 3. Write the names of five pointing devices.
Answer:- Pointing devices are input devices that help the user select, move, or control items on the screen. These devices are used to interact with the graphical user interface (GUI) in a computer. The five main pointing devices are:
- Mouse
- Touchpad
- Stylus Pen
- Joystick
- Touch Screen
Question 4. Write the names of any six input devices.
Answer:- Input Devices are devices that allow the user to enter data and commands into the computer. These devices help in communicating with the computer in various ways. The six main input devices are given below:
- 1. Keyboard
- 2. Mouse
- 3. Scanner
- 4. Microphone
- 5. Touchpad
- 6. Joystick
Question 5. What is the purpose of a scanner?
Answer:- Purpose of a scanner – A scanner is an input device that is used to enter any original (hard copy) or image into a computer in digital form. It scans documents, images, and writings to create a digital copy of them. There are different types of scanners, such as flatbed scanners, handheld scanners, and barcode scanners. They are mostly used in offices, schools, and publishing companies.
Question 6. Why are gaming devices used?
Answer:- Gaming devices are used – Pointing devices are input devices that help the user select, move, or control items on a computer screen. They are used to interact with a computer's graphical user interface (GUI). Mouse, touchpad, joystick, stylus, and touch screen are common pointing devices. They play an important role in games, designing, and navigation.
Long Answer Questions:
Question 1. What are input devices? Write the different
categories of input devices.
Answer:-Input Devices are devices that allow the user to enter data, commands, and information into a computer. These devices convert the user's commands into digital signals that the computer can understand. These devices help in communication between hardware and software. For example, keyboard, mouse, scanner, microphone, and touch screen etc.
Main Categories of Input Devices:- Input devices are divided into several categories based on their use and function.
I. Text Input Devices:- These devices are used to enter text or characters into a computer.
- Keyboard: The most common input device, which is used to type letters, numbers, and special symbols.
- Numeric Keypad: It is used for more computational tasks.
II. Pointing Input Devices:- These devices allow the user to select, move and control items on the screen.
- Mouse: It is used to control the cursor on the screen and select items.
- Touchpad: Used in place of the mouse in laptops.
- Joystick: Used to control the character in games.
- Stylus: Used to write or draw on the touch screen.
- Touch Screen: Users can control the screen with their finger or stylus.
III. Graphics Input Devices:- These devices are used in educational (Creative) and technical works.
- Scanner: To convert any document or image into digital form.
- Digitizer: To input hand-drawn images or maps into the computer.
IV. Audio & Video Input Devices:- These devices are used to input sound and video into the computer.
- Microphone: For recording sound or giving audio commands.
- Webcam: For video calls and online meetings.
- Digital Camera: For inputting pictures and videos into the computer.
V. Special Input Devices:- These devices are made for specific purposes.
- Barcode Scanner: For reading product information at stores selling goods.
- Biometric Scanner: For fingerprint or face recognition.
- GPS Device: For obtaining location information.
Question 2. Write a note on pointing devices?
Answer:- Pointing devices are devices that allow the user to
select and control icons, files or other items on the computer screen. They are
used to control the electronic elements displayed.
Major pointing devices:
1. Mouse – To move the cursor on the screen and
select items.
2. Touchpad – A touch-sensitive pad used in laptops.
3. Touch screen – To control a computer or mobile
with fingers or a stylus.
4. Joystick – A control device used in gaming and 3D
modeling.
5. Light pen – For writing on graphical works and
digital documents.
Question 3. Explain audio-visual devices. Also give
examples.
Answer:- Audio-visual devices are devices that are used to
convey, record or display sound (audio) and visual (visual) on a computer or
other media.
Categories of audio-visual devices:
1. Audio devices –
o Microphone – To input sound into the computer.
o Speaker – To listen to sound.
o Headphones/Earphones – For personal sound
experience.
2. Visual devices –
o Monitor – The computer screen that provides visual
information.
o Projector – To display images or videos on a large
screen.
o Webcam – For video calls or video recording.
Example:
• A microphone, webcam, and speaker are used to make video
calls on Zoom or Microsoft Teams.
• Projectors and sound systems are used in cinema halls.
• Smart boards are used in teaching or presentations.
Lesson - 7 Output Devices
Exercise
Multiple Choice Questions:
1. Which of these is an example of a visual display
device?
(a) Monitor (b) LCD (c) LED (d) All of the above
2. Identify the hard copy output device among these.
(a) Speaker (b) Monitor (c) Printer (d) None
of these
3. Which of these output devices is used to print vector
graphics?
(a) Laser Printer (b) Inkjet Printer (c) Dot Matrix Printer (d)
Plotter
4. Which of these devices is used for personal listening
to sound?
(a) Speaker (b) Headphone (c) Home Theater (d)
None of these
5. Which of these devices has become less popular these
days?
(a) Printers (b) LED (c) CRT Monitor (d)
Plotters
Write True/False for the given statements:
1. Printer is a softcopy output device. (False)
2. CRT monitor displays output using an electronic beam. (True)
3. Monitor size is measured diagonally. (True)
4. Softcopy output can be changed at any time. (True)
5. LCD is used to display large output to a large group of
people. (False)
Write the full names of the following terms:
1. CRT – Cathode Ray Tube
2. DMP – Dot Matrix Printer
3. LCD – Liquid Crystal Display
4. LED – Light Emitting Diode
Short Answer Questions:
Question 1. Explain softcopy output devices?
Answer:- Softcopy output devices are devices that display output electronically, rather than physically. Examples include monitors, projectors, and speakers. Monitors and projectors display visual data, while speakers provide audio output. These devices provide temporary output, which can be changed or removed later.
Question 2. What do you mean by visual output?
Answer:-Visual output refers to the output that is displayed in a visible form through a screen or projection. This output can be in the form of text, images, video, graphics, or animation. Monitors, projectors, and LED screens are the main examples of visual output. They display data in graphical or text form on any device.
Question 3. Write a short note on plotter?
Answer:-A plotter is an output device used to create high-quality graphics, drawings, and diagrams. It is primarily used by engineers, architects, and designers, especially for creating technical drawings and blueprints. Plotters work with the help of a pen or laser, which can produce precise and large-sized drawings on paper. It has more features than a printer.
Question 4. What are flat panel displays?
Answer:-Flat panel displays are thin and lightweight displays that provide visual output. They are more refined, space-saving, and energy-efficient than traditional cathode ray tube (CRT) monitors. Examples of flat panel displays include LCD (Liquid Crystal Display), LED (Light Emitting Diode), and OLED (Organic LED). They are used in laptops, tablets, smartphones, and TV screens.
Question 5. Write a short note on headphones?
Answer:-Headphones are an audio output device used to deliver sound directly to the ear. They can be wired or wireless/Bluetooth. Headphones are very popular for listening to music, making calls, and gaming. They provide a private listening experience, which does not affect the people around them.
Question 6. Explain audio devices?
Answer:-Audio devices are output devices that are used to transmit or playback sound. They come in the form of speakers, headphones, earphones, and sound bars. They are used for listening to music, movie audio, gaming, and communication. Audio devices produce sound in clear and better quality, which gives a better experience to the users.
Long Answer Questions:
Question 1. What are output devices? Explain the types of
output devices.
Answer:-Output devices are hardware devices that convert information received from a computer or any other digital device into a visual, audio or printed form. These devices help the user to understand and use the results of the computer. For example, when we print a text document, watch a video or listen to a song, all this work is possible only through output devices.
Types of Output Devices:- Output devices are mainly divided into three main categories:
1. Visual Output Devices
2. Audio Output Devices
3. Hard Copy Output Devices
1. Visual Output Devices:- These devices present data or information in a visible form. These include:
(i) Monitor:- This is the most common visual output device. It displays computer information on the screen.
There are three main types of monitors:
- CRT (Cathode Ray Tube) – Old technology, heavy and bulky.
- LCD (Liquid Crystal Display) – Thin, light and energy-saving.
- LED (Light Emitting Diode) – Better than LCD, with sharper image quality.
(ii) Projector:- It displays images or videos on a large screen or canvas. Used in classrooms, seminars, and home theaters.
2. Audio output devices:- These devices present information through sound or voice.
(i) Speakers:- They convert audio signals into sound. Used in music players, computers, and smartphones.
(ii) Headphones & Earphones:- These are used for private audio listening. They are in high demand for gaming, music, and calling.
3. Hard Copy Output Devices:- These devices convert digital information into physical form.
(i) Printer:- It prints computer data on paper.
The main three types are:
- Inkjet Printer – For home and business use.
- Laser Printer – Fast and high-quality printing.
- Dot Matrix Printer – Older technology, used where carbon copy is required.
(ii) Plotter:- It produces large-sized images, maps, and engineering drawings. Commonly used by engineers, architects, and designers.
Question 2. What is a printer? Explain its types.
Answer:- A printer is an output device that is used to print information from a computer or any other digital device onto paper or any other physical medium. It presents text, images, graphics or documents in the form of hard copy.
Main features of a printer:
✔ Converting digital information into hard copy
✔ Different printers based on different printing technologies
✔ Suitable options as per the user's requirement (Black & White, Color, High-Quality etc.)
✔ Useful for home, commercial, and industrial use
Types of printers:- Printers are divided into two main categories based on the ink:
- Impact Printers
- Non-Impact Printers
1. Impact Printers:- These printers print by making physical contact with the paper. They consist of a ribbon and a metal head, which strikes the paper like a typewriter to form letters.
(i) Dot Matrix Printer:- This is an old technology, in which the paper is struck with the help of a needle. They are less expensive but make more noise. They are used for printing bank, hotel, and railway tickets.
(ii) Daisy Wheel Printer:- This works like a typewriter. It is used for high-quality text printing. But it works slowly and cannot print images or graphics.
2. Non-Impact Printers:- These printers do not make any contact with the paper. They are based on modern technology, such as inkjet, laser, and 3D printers.
(i) Inkjet Printer:- This is the most common and used printer for home/business purposes. It prints with the help of small ink droplets. They are available in both color and black & white. Their printing quality is excellent, but they work slowly and the ink is expensive.
(ii) Laser Printer:- These print fast and high-quality with the help of laser technology. They use toner, which dries faster than ink. They are used in large offices and industries. They are very fast, noiseless and long-lasting.
(iii) Lithographic Printer:- These are used for printing large newspapers, colorful booklets, and posters. They specialize in printing images and graphics.
(iv) 3D Printer:- These are used to produce three-dimensional images, products, or models. They manufacture 3D shaped objects using plastic, metal, or other materials. They are very important in the engineering, medical, and designing industries.
Question 3. Explain softcopy output devices with example.
Answer:-Softcopy output devices are devices that present data or information in visual or audio form, without any physical (hard copy) printout. They can be created, modified, and shared through computers or other digital devices.
Example: A document displayed on a monitor, sound coming from a speaker, or an image appearing on a projector – all these are examples of softcopy output devices.
Main types of softcopy output devices
1. Visual Output Devices:- These devices display information on a screen or other visual media.
(i) Monitor:- Monitor is the most common visual output device. It displays graphics, text, and video on a screen.
Main types of monitors:
- CRT (Cathode Ray Tube) – Older technology, large size.
- LCD (Liquid Crystal Display) – Thin, light and energy-saving.
- LED (Light Emitting Diode) – Better, higher-quality display than LCD.
Example: Viewing a word file on a computer, creating designs in Photoshop, or playing games.
(ii) Projector:- It can display any digital display on a large screen. Used in classrooms, meeting rooms, and home theaters. Example: To display PPT (PowerPoint Presentation) in schools.
(iii) Digital Whiteboard:- It is an electronic screen, on which writing can be done and the information is directly connected to the computer. It is used in smart classrooms and offices. Example: The subject being explained by the teacher in a smart class.
2. Audio Output Devices:- These devices give information through sound.
(i) Speakers:- These reproduce the audio coming from the computer or other devices at a higher volume. Important for music, movies, gaming, and presentations. Example: Playing a song on YouTube or listening to the sound of a movie.
(ii) Headphones & Earphones:- These are used for private listening. Very useful for telephone, gaming, and personal audio listening. Example: Listening to songs on Spotify or Gaana in mobile.
Benefits of Softcopy Output
✔ They are eco-friendly (no paper required).
✔ They are fast and modern.
✔ They are easy to edit and maintain.
✔ They can provide multimedia content (Video, Sound, Animation).
Limitations of Softcopy Output
❌ Requires a computer or device.
❌ Runs on electricity or battery.
❌ Sometimes a high-quality screen is needed.
Question 4. What is a projector? Explain the difference
between a printer and a projector.
Answer:-A projector is an output device that displays visual information from a computer or other digital device on a large screen. It is used for educational, business, and entertainment purposes.
Main features of the projector:
✔ Ability to display on a large screen
✔ Used to display PPT, video, graphics, and text
✔ Use in smart classrooms, offices, home theaters, and conference rooms
✔ Can be connected to a computer or mobile via HDMI, VGA, USB, Wi-Fi
Types of projectors
1. Digital Light Projection (DLP - Digital Light Processing) projector
- High-quality image display
- Fast response time, good for video and multimedia
- Uses DMD (Digital Micromirror Device) technology
2. Liquid Crystal Display (LCD - Liquid Crystal Display) projector
- Provides white and good color
- Good visual quality, but runs slower than DLP
3. LED projector
- Small and portable
- Very low energy consumption
- Good for home and small offices
4. Laser projector
- Very high-quality and long-lasting Are used in large spaces (cinema, hall, smart class)
Difference between Printer and Projector:
|
Characteristics |
Printer |
Projector |
|
Function |
Writing
digital information on paper |
Displaying
visual information on a large screen |
|
Type of
output |
Hard copy |
Visual output |
|
Examples |
Ink-jet,
laser printer |
LCD, DLP
projector |
|
Uses |
Printing
documents, pictures |
Education,
presentations, cinema |
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