Question 1

Question 1List the different types of mouse. Explain them.

Accepted Answer

The different types of mouse are as follows:Mechanical Mouse — This type of mouse has a metal or rubber ball on its lower side that can roll in all the directions. The screen pointer moves according to the movement of the ball which is detected by the mechanical sensors within the mouse.Opto-Mechanical Mouse — This type of mouse uses a mechanism similar to the mechanical mouse. The only difference is that it uses optical sensors to detect the movement of the ball.Optical Mouse — An optical mouse does not have any mechanical moving parts. The laser technology is used to detect the movement of the mouse. It is more efficient and expensive than the Mechanical and Opto-Mechanical mouse.

Question 2

Question 2Differentiate between Impact and Non Impact printers.

Accepted Answer

Impact PrintersNon Impact printersIt forms characters by striking a print hammer against an inked ribbon.It forms characters without making direct contact with the paper.It uses either ribbon or carbon paper.It uses ink cartridges.It makes noise while printing.It prints smoothly on the paper.

Question 3

Question 3Discuss the features and applications of an MICR.

Accepted Answer

MICR stands for Magnetic Ink Character Recognition. This technology allows computers to read information from the printed documents.MICR characters are printed in special typefaces with a magnetic ink or toner, usually containing iron oxide.As a machine decodes the MICR text, it first magnetizes the characters in the plane surface of the paper.The characters are passed over an MICR read head, a device similar to the playback head of a tape recorder.As each character passes over the head, it produces a unique wave form that can easily be identified by the system.MICR codes can easily be read by humans.MICR is used mainly by the banking industry to:Ease the processing and clearance of chequesStreamline the processing and clearance of other documentsIdentify the document's originality

Question 4

Question 4Write the difference between a DVD and a CD.

Accepted Answer

CDDVDCD stands for Compact Disc.DVD stands for Digital Versatile Disc.The storage capacity varies from 650 MB to 900 MB.A DVD can hold 4.7 GB to 17 GB of data.CDs are made of a polycarbonate disc with a reflective aluminum layer on one side.DVDs are made of a polycarbonate disc with a reflective aluminum layer on both sides.CDs are more likely to be scratched or damaged, which can cause data loss.DVDs are more durable than CDs as they have a protective layer on both sides of the disc.

Question 5

Question 5Explain the functions and usage of a bar code reader.

Accepted Answer

A barcode reader is an input device that scans barcodes and decodes the information they contain. A bar code is a combination of dark and light stripes. It is a computer readable representation of information, present in visual format. A bar code reader consists of a light source, a lens, and a light sensor for translating the optical impulses into electrical signals.Barcode readers are used for a variety of purposes such as :Tracking inventoryProcessing transactionsAsset trackingPackage trackingTime and attendanceSoftware upgrades

Question 6

Question 6Explain the three main types of Non Impact printers.

Accepted Answer

The three main types of Non Impact printers are:Thermal Printers — Thermal printers use a special heat sensitive paper. Characters are formed when heated elements come in contact with the heat sensitive paper, thus forming darkened dots. The standard of print produced is poor. Thermal printers are widely used in battery powered equipments, such as portable calculators.Ink-jet Printers — They produce images by spraying tiny droplets of ink onto the paper. They have very high quality output and can also produce coloured graphics. These printers are less noisy. The average quality of inkjet printers is 300 dpi (dots per inch). They use coloured cartridges which combine magenta, yellow, and cyan inks to create colour tones. A black cartridge is also used for crisp monochrome output. They are cheap and ideal for home/office.Laser Printers — Laser printers use photocopy technology to print. They use a laser beam and dry powdered ink to produce a fine dot matrix pattern. The quality of output on paper is very good. They can also produce very high quality images. They are mostly used for DTP (Desktop Publishing) purpose. They can print about 6 to 10 pages per minute. They have a very high resolution ranging from 600-1200 dpi (dots per inch).

Question 7

Question 7Write the types of monitors? Explain their features.

Accepted Answer

The different types of monitors are:Cathode Ray Tube (CRT) Monitors — The features of a CRT monitor are:CRT monitors consist of an electron gun.In these monitors, a beam of electrons lights up the pixels/phosphor dots, which form the inner coating of the screen.Colour is achieved by combining Red, Green, and Blue (RGB) shades of different intensities.CRT monitors are bulky and occupy a lot of space.They are available in various sizes, like 14 inches, 15 inches, 17 inches, and 21 inches.A CRT monitor still has better contrast ratios and viewing angles than any other type of computer monitor.Liquid Crystal Display (LCD) Monitors — The features of LCD monitors are :LCD monitors are relatively thinner and lighter than CRT monitors.They use the light modulating properties of Liquid Crystals (LCs).Liquid Crystals do not emit light directly.They save a lot of space and can be mounted on walls.They provide a wide viewing angle and come in various sizes ranging from 17 inches to 60 inches.They display sharp images and require less power to run.They are used in a wide range of applications including computer monitors, television, instrumental panels, aircraft cockpit displays, etc.They are also used in devices, such as clocks, watches, calculators, gaming devices, and telephones.Light Emitting Diode (LED) Monitor — LED display has the following features:LED monitors are light emitting diodes that act as performance boosters in them.LED monitors offer better colour quality, clarity, and display than the LCD monitors.These monitors are flat, thinner and lighter in weight.The biggest advantage of LED display is its efficient and low energy consumption, which is especially needed for handled and chargeable devices, such as mobile phones, tablets, and laptops.These monitors are in maximum use nowadays.

Question 8

Question 8Discuss the various types of memory sticks.

Accepted Answer

The various types of memory sticks are:Memory Stick PRO — It was introduced in 2003 as a joint effort of Sony and SanDisk. It is available in storage sizes up to 2 GB.Memory Stick Duo and Memory Stick PRO Duo — These are basically smaller versions of the Memory stick and Memory stick Pro. Memory stick Duo was replaced by Memory Stick Pro Duo due to its increased size limitation and slow transfer speed. With faster data transfer speed and high capacity flash memory, a Memory Stick Pro Duo card perfectly meets the requirements of a portable digital device.Magic Gate — It is a copy protection technology introduced by Sony in 1999. It is a form of DRM (Digital Rights Management) that allows for protected content to be transferred to and from a memory card and utilized on a device, such as an MP3 player or cellular phone. It encrypts the data stored on a card and enforces control over how files are copied. It is typically used for audio and video but can also be used for contents in other formats.

Question 9

Question 9Differentiate between Flatbed Plotter and Drum Plotter.

Accepted Answer

Flatbed PlotterDrum PlotterIt is also known as a Table Plotter.It is also known as a Roller Plotter.Flatbed plotters hold the paper still while the pen moves. They place the paper on a flat surface.Drum plotters roll the paper over a cylinder. They wrap the paper around a drum.Flatbed Plotter are comparatively larger.Drum plotters are generally smaller.Flatbed plotters have lower resolutions.Drum plotters have lower resolutions.They are less noisy.They are more noisy.THey are used for printing graphs.They are used to produce continuous output, such as plotting earthquake activity.

Question 10

Question 10Explain the various types of keys of a keyboard.

Accepted Answer

The various types of keys of a keyboard are:Typing Keys — These keys include letters (Alphabet keys), numbers (Number keys), punctuation (. , : ; ' ") and Special Symbol (+ - - $ keys) etc. These keys also include the Shift, Caps Lock, Spacebar, Backspace, and the Tab keys.Control Keys —	These keys are either used alone or in combination with other keys to perform an action. Ctrl, Alt, Windows logo key, and the Esc key are various examples of Control keys.Navigation Keys — They are used for moving through documents or web pages and sometimes for editing the text. These keys include the Arrow keys, HOME, END, PgUp, PgDn, DELETE, and INSERT keys.Function Keys — They are used to perform specific tasks. They are placed on the top row of the keyboard and are labelled as F1, ..., F12. These keys have different functions in different programs.Numeric Keypad — The numeric keypad consists of number keys from 0 to 9, the arithmetic operators and the decimal point. It is placed on the right side of a keyboard and is used for entering numbers at a faster pace.

Question 11

Question 11Discuss the features and applications of web cam.

Accepted Answer

A webcam is the short form of the web camera. It is a device primarily used to share a live image in real time to or through a computer in a network.A webcam is connected to the computer by a USB cable or built into computer hardware, such as laptops. When sent to a remote location, the videos can be recorded, viewed, saved on the hard drive or live-streamed over the internet.A webcam is widely used in organizations for video conferencing. They can also be used for video telephony, live streaming, social media, security, video surveillance etc.

Question 12

Question 13A portable memory data storage device which is mainly used to transfer files from the hard drive of one computer to another is ............... .Flash driveBlu-ray DiskMemory stickCD-ROM

Accepted Answer

Flash driveReason — A portable memory data storage device which is mainly used to transfer files from the hard drive of one computer to another is Flash drive.

Source: This question is from Input and Output Devices, Computer Applications &mdash; Class 9, CBSE Board.
Key Concepts CoveredThis question tests your understanding of the following concepts from the chapter Input and Output Devices: Question, Portable, Memory, Data, Storage, Device. These are fundamental topics in Computer Applications that students are expected to master as part of the CBSE Class 9 curriculum.A thorough understanding of these concepts will help you answer similar questions confidently in your CBSE examinations. These topics are frequently tested in both objective and subjective sections of Computer Applications papers. We recommend revising the relevant section of your textbook alongside practising these solved examples to build a strong foundation.
How to Approach MCQsMultiple choice questions test your ability to quickly recall facts and apply concepts. Read all options carefully before selecting your answer. Use the process of elimination to rule out clearly incorrect options first. If two options seem similar, look for the subtle difference that makes one more accurate. For numerical MCQs, verify your answer by substituting it back into the problem.
Key Points to RememberWrite programs with proper indentation and comments.
Trace through your code with sample inputs to verify correctness.
Explain the logic behind each step of your solution.
Familiarise yourself with common library functions and methods.
Related Questions from Input and Output DevicesQ1: Question 1 List the different types of mouse. Explain them.
Q10: Question 10 Explain the various types of keys of a keyboard.
Q11: Question 11 Discuss the features and applications of web cam.
Q12: Question 12 Define some places where you find the application of touch screen.
Q14: Question 14 Which removable flash memory card format was launched in 2003 as a joint effort of Sony...
Practice more questions from Input and Output Devices &mdash; Computer Applications, Class 9 CBSE

Question 13

Question 14Which removable flash memory card format was launched in 2003 as a joint effort of Sony and Scan Disk?Memory Stick DuoMemory Stick ProMagic GateNone of these

Accepted Answer

Memory Stick ProReason — Memory Stick Pro is a removable flash memory card format was launched in 2003 as a joint effort of Sony and Scan Disk.

Source: This question is from Input and Output Devices, Computer Applications &mdash; Class 9, CBSE Board.
Key Concepts CoveredThis question tests your understanding of the following concepts from the chapter Input and Output Devices: Question, Removable, Flash, Memory, Card, Format. These are fundamental topics in Computer Applications that students are expected to master as part of the CBSE Class 9 curriculum.A thorough understanding of these concepts will help you answer similar questions confidently in your CBSE examinations. These topics are frequently tested in both objective and subjective sections of Computer Applications papers. We recommend revising the relevant section of your textbook alongside practising these solved examples to build a strong foundation.
How to Approach MCQsMultiple choice questions test your ability to quickly recall facts and apply concepts. Read all options carefully before selecting your answer. Use the process of elimination to rule out clearly incorrect options first. If two options seem similar, look for the subtle difference that makes one more accurate. For numerical MCQs, verify your answer by substituting it back into the problem.
Key Points to RememberWrite programs with proper indentation and comments.
Trace through your code with sample inputs to verify correctness.
Explain the logic behind each step of your solution.
Familiarise yourself with common library functions and methods.
Related Questions from Input and Output DevicesQ1: Question 1 List the different types of mouse. Explain them.
Q10: Question 10 Explain the various types of keys of a keyboard.
Q11: Question 11 Discuss the features and applications of web cam.
Q12: Question 12 Define some places where you find the application of touch screen.
Q15: Question 15 The speed of a Dot Matrix printer is measured in ............... . dpi cps bits All of...
Practice more questions from Input and Output Devices &mdash; Computer Applications, Class 9 CBSE

Question 14

Question 15The speed of a Dot Matrix printer is measured in ............... .dpicpsbitsAll of these

Accepted Answer

cpsReason — The speed of a Dot Matrix printer ranges from 50 (characters per second) to 500 (characters per second).

Source: This question is from Input and Output Devices, Computer Applications &mdash; Class 9, CBSE Board.
Key Concepts CoveredThis question tests your understanding of the following concepts from the chapter Input and Output Devices: Question, Speed, Dot, Matrix, Printer, Measured. These are fundamental topics in Computer Applications that students are expected to master as part of the CBSE Class 9 curriculum.A thorough understanding of these concepts will help you answer similar questions confidently in your CBSE examinations. These topics are frequently tested in both objective and subjective sections of Computer Applications papers. We recommend revising the relevant section of your textbook alongside practising these solved examples to build a strong foundation.
How to Approach MCQsMultiple choice questions test your ability to quickly recall facts and apply concepts. Read all options carefully before selecting your answer. Use the process of elimination to rule out clearly incorrect options first. If two options seem similar, look for the subtle difference that makes one more accurate. For numerical MCQs, verify your answer by substituting it back into the problem.
Key Points to RememberWrite programs with proper indentation and comments.
Trace through your code with sample inputs to verify correctness.
Explain the logic behind each step of your solution.
Familiarise yourself with common library functions and methods.
Related Questions from Input and Output DevicesQ1: Question 1 List the different types of mouse. Explain them.
Q10: Question 10 Explain the various types of keys of a keyboard.
Q11: Question 11 Discuss the features and applications of web cam.
Q12: Question 12 Define some places where you find the application of touch screen.
Q14: Question 14 Which removable flash memory card format was launched in 2003 as a joint effort of Sony...
Practice more questions from Input and Output Devices &mdash; Computer Applications, Class 9 CBSE

Question 15

Question 16Dot-Matrix printer is a type of ............... .Impact printerNon-Impact printerManual printerMatrix printer

Accepted Answer

Impact printerReason — Dot-Matrix printer is a type of impact printer.

Source: This question is from Input and Output Devices, Computer Applications &mdash; Class 9, CBSE Board.
Key Concepts CoveredThis question tests your understanding of the following concepts from the chapter Input and Output Devices: Question, Dot, Matrix, Printer, Impact, Non. These are fundamental topics in Computer Applications that students are expected to master as part of the CBSE Class 9 curriculum.A thorough understanding of these concepts will help you answer similar questions confidently in your CBSE examinations. These topics are frequently tested in both objective and subjective sections of Computer Applications papers. We recommend revising the relevant section of your textbook alongside practising these solved examples to build a strong foundation.
How to Approach MCQsMultiple choice questions test your ability to quickly recall facts and apply concepts. Read all options carefully before selecting your answer. Use the process of elimination to rule out clearly incorrect options first. If two options seem similar, look for the subtle difference that makes one more accurate. For numerical MCQs, verify your answer by substituting it back into the problem.
Key Points to RememberWrite programs with proper indentation and comments.
Trace through your code with sample inputs to verify correctness.
Explain the logic behind each step of your solution.
Familiarise yourself with common library functions and methods.
Related Questions from Input and Output DevicesQ1: Question 1 List the different types of mouse. Explain them.
Q10: Question 10 Explain the various types of keys of a keyboard.
Q11: Question 11 Discuss the features and applications of web cam.
Q12: Question 12 Define some places where you find the application of touch screen.
Q14: Question 14 Which removable flash memory card format was launched in 2003 as a joint effort of Sony...
Practice more questions from Input and Output Devices &mdash; Computer Applications, Class 9 CBSE

Question 16

Question 17Which of the following is an output device?MouseCPUVDUJoystick

Accepted Answer

VDUReason — Visual Display Unit (VDU) is an output device.

Source: This question is from Input and Output Devices, Computer Applications &mdash; Class 9, CBSE Board.
Key Concepts CoveredThis question tests your understanding of the following concepts from the chapter Input and Output Devices: Question, Output, Device, Mouse, Cpu, Vdu. These are fundamental topics in Computer Applications that students are expected to master as part of the CBSE Class 9 curriculum.A thorough understanding of these concepts will help you answer similar questions confidently in your CBSE examinations. These topics are frequently tested in both objective and subjective sections of Computer Applications papers. We recommend revising the relevant section of your textbook alongside practising these solved examples to build a strong foundation.
How to Approach MCQsMultiple choice questions test your ability to quickly recall facts and apply concepts. Read all options carefully before selecting your answer. Use the process of elimination to rule out clearly incorrect options first. If two options seem similar, look for the subtle difference that makes one more accurate. For numerical MCQs, verify your answer by substituting it back into the problem.
Key Points to RememberWrite programs with proper indentation and comments.
Trace through your code with sample inputs to verify correctness.
Explain the logic behind each step of your solution.
Familiarise yourself with common library functions and methods.
Related Questions from Input and Output DevicesQ1: Question 1 List the different types of mouse. Explain them.
Q10: Question 10 Explain the various types of keys of a keyboard.
Q11: Question 11 Discuss the features and applications of web cam.
Q12: Question 12 Define some places where you find the application of touch screen.
Q14: Question 14 Which removable flash memory card format was launched in 2003 as a joint effort of Sony...
Practice more questions from Input and Output Devices &mdash; Computer Applications, Class 9 CBSE

Question 17

Question 18A laser printer uses ............... .Heat sensitive paperSpray inkPhotocopy technologyNone of these

Accepted Answer

Photocopy technologyReason — A laser printer uses Photocopy technology.

Source: This question is from Input and Output Devices, Computer Applications &mdash; Class 9, CBSE Board.
Key Concepts CoveredThis question tests your understanding of the following concepts from the chapter Input and Output Devices: Question, Laser, Printer, Uses, Heat, Sensitive. These are fundamental topics in Computer Applications that students are expected to master as part of the CBSE Class 9 curriculum.A thorough understanding of these concepts will help you answer similar questions confidently in your CBSE examinations. These topics are frequently tested in both objective and subjective sections of Computer Applications papers. We recommend revising the relevant section of your textbook alongside practising these solved examples to build a strong foundation.
How to Approach MCQsMultiple choice questions test your ability to quickly recall facts and apply concepts. Read all options carefully before selecting your answer. Use the process of elimination to rule out clearly incorrect options first. If two options seem similar, look for the subtle difference that makes one more accurate. For numerical MCQs, verify your answer by substituting it back into the problem.
Key Points to RememberWrite programs with proper indentation and comments.
Trace through your code with sample inputs to verify correctness.
Explain the logic behind each step of your solution.
Familiarise yourself with common library functions and methods.
Related Questions from Input and Output DevicesQ1: Question 1 List the different types of mouse. Explain them.
Q10: Question 10 Explain the various types of keys of a keyboard.
Q11: Question 11 Discuss the features and applications of web cam.
Q12: Question 12 Define some places where you find the application of touch screen.
Q14: Question 14 Which removable flash memory card format was launched in 2003 as a joint effort of Sony...
Practice more questions from Input and Output Devices &mdash; Computer Applications, Class 9 CBSE

Question 18

Question 19Which of the following is used as an internal memory?CD ROMPROMHard diskMemory stick

Accepted Answer

PROMReason — Programmable ROM (PROM) is used as an internal memory.

Source: This question is from Input and Output Devices, Computer Applications &mdash; Class 9, CBSE Board.
Key Concepts CoveredThis question tests your understanding of the following concepts from the chapter Input and Output Devices: Question, Internal, Memory, Rom, Prom, Hard. These are fundamental topics in Computer Applications that students are expected to master as part of the CBSE Class 9 curriculum.A thorough understanding of these concepts will help you answer similar questions confidently in your CBSE examinations. These topics are frequently tested in both objective and subjective sections of Computer Applications papers. We recommend revising the relevant section of your textbook alongside practising these solved examples to build a strong foundation.
How to Approach MCQsMultiple choice questions test your ability to quickly recall facts and apply concepts. Read all options carefully before selecting your answer. Use the process of elimination to rule out clearly incorrect options first. If two options seem similar, look for the subtle difference that makes one more accurate. For numerical MCQs, verify your answer by substituting it back into the problem.
Key Points to RememberWrite programs with proper indentation and comments.
Trace through your code with sample inputs to verify correctness.
Explain the logic behind each step of your solution.
Familiarise yourself with common library functions and methods.
Related Questions from Input and Output DevicesQ1: Question 1 List the different types of mouse. Explain them.
Q10: Question 10 Explain the various types of keys of a keyboard.
Q11: Question 11 Discuss the features and applications of web cam.
Q12: Question 12 Define some places where you find the application of touch screen.
Q14: Question 14 Which removable flash memory card format was launched in 2003 as a joint effort of Sony...
Practice more questions from Input and Output Devices &mdash; Computer Applications, Class 9 CBSE

Question 19

Question 20Main memory is ............... in nature.Non-volatileVolatileBoth 1 and 2None of these

Accepted Answer

Both 1 and 2Reason — RAM and ROM are both main memory. RAM is a volatile memory and ROM is a non-volatile memory.

Source: This question is from Input and Output Devices, Computer Applications &mdash; Class 9, CBSE Board.
Key Concepts CoveredThis question tests your understanding of the following concepts from the chapter Input and Output Devices: Question, Main, Memory, Nature, Non, Volatile. These are fundamental topics in Computer Applications that students are expected to master as part of the CBSE Class 9 curriculum.A thorough understanding of these concepts will help you answer similar questions confidently in your CBSE examinations. These topics are frequently tested in both objective and subjective sections of Computer Applications papers. We recommend revising the relevant section of your textbook alongside practising these solved examples to build a strong foundation.
How to Approach MCQsMultiple choice questions test your ability to quickly recall facts and apply concepts. Read all options carefully before selecting your answer. Use the process of elimination to rule out clearly incorrect options first. If two options seem similar, look for the subtle difference that makes one more accurate. For numerical MCQs, verify your answer by substituting it back into the problem.
Key Points to RememberWrite programs with proper indentation and comments.
Trace through your code with sample inputs to verify correctness.
Explain the logic behind each step of your solution.
Familiarise yourself with common library functions and methods.
Related Questions from Input and Output DevicesQ1: Question 1 List the different types of mouse. Explain them.
Q10: Question 10 Explain the various types of keys of a keyboard.
Q11: Question 11 Discuss the features and applications of web cam.
Q12: Question 12 Define some places where you find the application of touch screen.
Q14: Question 14 Which removable flash memory card format was launched in 2003 as a joint effort of Sony...
Practice more questions from Input and Output Devices &mdash; Computer Applications, Class 9 CBSE

Question 20

Question 21MICR stands for ............... .Magnetic Ink Character ReaderMagnetic Inch Character ReaderMagnetic Ink Code ReaderNone of these

Accepted Answer

Magnetic Ink Character ReaderReason — MICR stands for Magnetic Ink Character Reader.

Source: This question is from Input and Output Devices, Computer Applications &mdash; Class 9, CBSE Board.
Key Concepts CoveredThis question tests your understanding of the following concepts from the chapter Input and Output Devices: Question, Micr, Stands, Magnetic, Ink, Character. These are fundamental topics in Computer Applications that students are expected to master as part of the CBSE Class 9 curriculum.A thorough understanding of these concepts will help you answer similar questions confidently in your CBSE examinations. These topics are frequently tested in both objective and subjective sections of Computer Applications papers. We recommend revising the relevant section of your textbook alongside practising these solved examples to build a strong foundation.
How to Approach MCQsMultiple choice questions test your ability to quickly recall facts and apply concepts. Read all options carefully before selecting your answer. Use the process of elimination to rule out clearly incorrect options first. If two options seem similar, look for the subtle difference that makes one more accurate. For numerical MCQs, verify your answer by substituting it back into the problem.
Key Points to RememberWrite programs with proper indentation and comments.
Trace through your code with sample inputs to verify correctness.
Explain the logic behind each step of your solution.
Familiarise yourself with common library functions and methods.
Related Questions from Input and Output DevicesQ1: Question 1 List the different types of mouse. Explain them.
Q10: Question 10 Explain the various types of keys of a keyboard.
Q11: Question 11 Discuss the features and applications of web cam.
Q12: Question 12 Define some places where you find the application of touch screen.
Q14: Question 14 Which removable flash memory card format was launched in 2003 as a joint effort of Sony...
Practice more questions from Input and Output Devices &mdash; Computer Applications, Class 9 CBSE

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