Input and Output Devices MCQ Questions and Answers - Part 4
50 Input Output Devices MCQs with Detailed Explanations | Keyboard, Mouse, Monitor, Printer | CCC, Banking, SSC Exam Preparation
1Which of these is an input device?
Answer: C
Input devices send data to computer, output devices display or produce results.
2What is the function of a mouse?
Answer: B
Modern mice can be wired, wireless, or optical with scroll wheels.
3Which device is used to produce hard copies of documents?
Answer: C
Common printer types include inkjet, laser, and dot matrix.
4What does VDU stand for?
Answer: A
VDU displays visual output from the computer to the user.
5Which device converts physical documents into digital format?
Answer: B
Scanners can be flatbed, sheet-fed, or handheld types.
6What is the function of a speaker?
Answer: B
Speakers are essential for multimedia applications and system sounds.
7Which input device is used for playing games?
Answer: B
Joysticks have buttons and directional controls for interactive gaming.
8What does OMR stand for?
Answer: A
OMR technology is commonly used for checking answer sheets and surveys.
9Which device is both input and output?
Answer: C
Smartphones, tablets, and ATMs use touchscreen technology.
10What is the purpose of a microphone?
Answer: B
Used for voice recording, video calls, and voice recognition systems.
11Which printer type uses ink cartridges?
Answer: C
Inkjet printers are popular for home use and photo printing.
12What does CRT stand for in monitors?
Answer: A
CRT technology has been largely replaced by LCD and LED displays.
13Which device is used for biometric identification?
Answer: C
Biometric devices provide enhanced security through physical characteristics.
14What is the function of a plotter?
Answer: B
Plotters use pens to draw continuous lines on large paper sheets.
15Which input device is used in banks for reading cheques?
Answer: B
MICR ensures secure and accurate processing of banking documents.
16What does LCD stand for?
Answer: A
LCD monitors are thinner, lighter, and more energy-efficient than CRT.
17Which device is used to control cursor movement in laptops?
Answer: B
Trackpads support multi-touch gestures like scrolling and zooming.
18What is the purpose of a barcode reader?
Answer: B
Used in retail, inventory management, and library systems.
19Which output device produces temporary results?
Answer: B
Soft copy output is temporary, while hard copy from printers is permanent.
20What does OCR stand for?
Answer: A
Used for digitizing printed documents, books, and forms.
21Which printer type uses toner powder?
Answer: C
Laser printers are faster and produce higher quality text than inkjet printers.
22What is the function of a webcam?
Answer: B
Webcams are essential for online meetings, streaming, and video calls.
23Which device is used for reading QR codes?
Answer: C
QR codes store more information than traditional barcodes in a square pattern.
24What does LED stand for in monitors?
Answer: A
LED displays are thinner, brighter, and more energy-efficient than LCD.
25Which input device is used by architects for precise drawings?
Answer: B
Used by digital artists, architects, and graphic designers for accurate input.
26What is the purpose of a headset?
Answer: C
Ideal for gaming, video calls, and voice recording applications.
27Which printer type uses pins to strike ink ribbon?
Answer: C
Still used for multi-part forms and carbon copies in some businesses.
28What does DPI stand for in printers?
Answer: A
Typical DPI values range from 300 to 2400 for various printing needs.
29Which device is used for 3D printing?
Answer: C
Used in prototyping, manufacturing, and creative applications.
30What is the function of a digital camera?
Answer: B
Images can be transferred to computers for editing and sharing.
31Which monitor type offers the best color accuracy?
Answer: D
Preferred by graphic designers and photographers for color-critical work.
32What is a trackball?
Answer: A
Requires less desk space than traditional mouse and used in industrial applications.
33Which device is used for eye recognition security?
Answer: B
Considered one of the most secure biometric identification methods.
34What is the resolution of a monitor?
Answer: B
Higher resolution means sharper and more detailed images.
35Which input device is used in supermarkets?
Answer: C
Speeds up the billing process and maintains accurate inventory.
36What does PPM stand for in printers?
Answer: A
Laser printers typically have higher PPM than inkjet printers.
37Which device is used for voice input to computer?
Answer: C
Used in voice assistants, dictation software, and online meetings.
38What is a touchpad?
Answer: B
Also known as trackpad, it replaces the need for external mouse on laptops.
39Which printer is best for printing receipts?
Answer: C
Commonly used in POS systems, ATMs, and credit card terminals.
40What is the refresh rate of a monitor?
Answer: B
Higher refresh rates (120Hz, 144Hz, 240Hz) are better for gaming and video.
41Which device captures handwritten signatures?
Answer: B
Used in banking, delivery services, and legal document signing.
42What is an optical mouse?
Answer: B
More accurate and requires less maintenance than mechanical mice.
43Which output device is used for large presentations?
Answer: B
Commonly used in classrooms, conference rooms, and home theaters.
44What is a light pen?
Answer: A
User points directly at screen to select items or draw graphics.
45Which device is used for facial recognition?
Answer: A
Used in security systems, smartphone unlocking, and attendance systems.
46What is the purpose of a sound card?
Answer: B
Provides audio input/output capabilities for multimedia applications.
47Which keyboard layout is most commonly used?
Answer: B
Named after the first six letters on the top left row of keys.
48What is a digital pen used for?
Answer: B
Provides pressure sensitivity for natural drawing and writing experience.
49Which device is used for virtual reality input?
Answer: A
Enables interactive experiences in gaming, training, and simulations.
50What is the function of a network printer?
Answer: A
Eliminates the need for direct computer connections, ideal for offices.
