A microphone is
- A. output of sound only
- B. an input device for sound
- C. a storage disk
- D. an OS
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Correct option: B — an input device for sound
Speakers are the matching output.
Class 9 · कंप्यूटर · 255+ Q&A
Class 9 Computer — Input and Output Important Questions with Answers
IT basics, hardware, software, internet safety and MS Office for Class 9. Showing 15 of 15 on page 1 / 1.
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All chapters
1. Hardware
2. Software
3. Operating System
4. Memory and Storage
5. Input and Output
6. Networking
7. Internet and Email
8. Cyber Safety
9. MS Office
10. Number System
11. IPR and Digital Ethics
Page 1 of 1 · 15 questions in this view
A monitor is
- A. an input device only
- B. a visual output device
- C. a programming language
- D. a LAN cable
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Correct option: B — a visual output device
Touchscreens can be both input and output.
OCR software with a scanner helps to
- A. cool the CPU
- B. turn printed text into editable digital text
- C. charge UPS
- D. create binary from nothing
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Correct option: B — turn printed text into editable digital text
Optical Character Recognition.
A joystick is commonly used for
- A. printing marksheets
- B. games and some simulations
- C. cooling RAM
- D. sending registered post
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Correct option: B — games and some simulations
It is an input device.
Braille printers / embossers serve
- A. only music DJs
- B. visually impaired readers as output
- C. CPU overclocking
- D. IP theft
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Correct option: B — visually impaired readers as output
Inclusive I/O is part of IT awareness.
Which pair is correct?
- A. Keyboard–output, Printer–input
- B. Keyboard–input, Printer–output
- C. Both only storage
- D. Both only software
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Correct option: B — Keyboard–input, Printer–output
Direction of data decides the class.
A webcam is
- A. output only
- B. an input device for video
- C. a compiler
- D. a protocol
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Correct option: B — an input device for video
Cover it when not in use for privacy.
Speakers convert
- A. sound to text always
- B. digital/electrical signals to sound we hear
- C. RAM to ROM
- D. LAN to WAN
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Correct option: B — digital/electrical signals to sound we hear
Output device.
A barcode reader is
- A. output
- B. input that reads printed codes
- C. an OS
- D. a formula
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Correct option: B — input that reads printed codes
Library and shop use.
A projector is
- A. input
- B. output that throws the screen image on a wall
- C. a protocol
- D. a bit
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Correct option: B — output that throws the screen image on a wall
Common in classrooms.
Which is a hard-copy output?
- A. Image on a monitor only
- B. Page from a printer
- C. Sound from a speaker only
- D. A file in RAM
View the correct answer
Correct option: B — Page from a printer
Soft copy is on screen.
Classify keyboard, scanner, monitor, speaker, printer.
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Keyboard and scanner: input. Monitor and speaker: output. Printer: output (hard copy). A touchscreen can be both. Classification depends on the direction of data, not the price of the device.
What is the difference between hard copy and soft copy?
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Soft copy is the display or file on a screen. Hard copy is printed on paper or similar. Soft copy is easy to edit and share; hard copy is useful for notice boards and exams. Print only when needed to save paper.
What is OCR? Where is it useful in school?
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Optical Character Recognition turns a scanned printed page into text that Word can edit. Useful for digitising a typed notice, not for copying a whole copyrighted book. Accuracy depends on print quality.
Classify I/O devices and explain one school lab setup.
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Input: keyboard, mouse, scanner, mic, webcam, joystick, barcode reader. Output: monitor, speaker, printer, projector, plotter, Braille embosser. Some devices are both (touchscreen). In a classroom, the teacher laptop (input+process) sends HDMI output to a projector; students type on lab keyboards; a shared laser printer makes hard copies. Soft copy is on screen; print only when needed. Drivers and correct ports (USB, HDMI) complete the chain.
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Class 9 Computer में कितने प्रश्न हैं? 255 महत्वपूर्ण प्रश्न: 174 MCQ, 50 लघु, 31 दीर्घ।
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