MCQ on Input and Output Devices – Computer GK
Useful and informative MCQ on Input and Output Devices – Computer GK that includes topics like Input Devices – Keyboard, Mouse, Scanner, Joy Stick, Track Ball, Light pen, Graphic Tablet, Microphone, etc. and Output Devices – Monitor, Printer, Plotter, Projector, Speakers, Headphones, etc.
These MCQ on Input and Output Devices – Computer GK are very helpful for competitive exams such as CPCT, GATE, IES/ESE, IBPS PO, IBPS Clerk, SBI PO, SBI Clerk, RBI, SEBI, LIC, NICL, BCA, B.Sc. IT, DCA, SSC, RRB, NIELIT CCC, CTET, UDC NET, CUET, MCA, PGDCA, MCS, TET, State Police, BPO, etc.
These MCQ on Input and Output Devices – Computer GK have correct answers and brief explanations of each question for better understanding.
Q11. Which input device is used to capture handwriting or brush strokes and convert them into digital data?
a) Light pen
b) Digital pen
c) Trackball
d) Joystick
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Correct Answer: b) Digital pen
Explanation: A digital pen is an input device that captures the handwriting or brush strokes of a user and converts handwritten analog information into digital data. This enables the data to be utilized in various applications, such as uploading to a computer and displaying on its monitor.
Q12. Which input device consists of a ball held by a socket containing sensors to detect rotation about two axes?
a) Mouse
b) Joystick
c) Trackball
d) Light pen
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Correct Answer: c) Trackball
Explanation: A trackball is an input device consisting of a ball held by a socket containing sensors to detect rotation about two axes. It serves the same purpose as a mouse but is designed with a movable ball on the top, which can be rolled in any direction to generate motion input.
Q13. Which input device is used to read data from card-shaped storage media?
a) Card reader
b) Barcode reader
c) OCR
d) OMR
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Correct Answer: a) Card reader
Explanation: A card reader is a data input device that reads data from card-shaped storage media, such as magnetic stripe cards, smart cards, and memory cards. Card readers can be found in various forms, including standalone devices connected to a computer via USB or integrated into a computer or multifunction device.
Q14. Which input device is used to convert printed text into digital information?
a) OMR
b) MICR
c) OCR
d) Barcode reader
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Correct Answer: c) OCR
Explanation: Optical Character Recognition (OCR) devices are used to convert printed text into digital information. These devices scan printed text and recognize the characters, allowing the information to be stored and processed digitally.
Q15. Which input device is used to recognize and interpret human speech?
a) Touch screen
b) Speech recognition devices
c) Vision input system
d) Electronic pen
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Correct Answer: b) Speech recognition devices
Explanation: Speech recognition devices are input devices designed to recognize and interpret human speech. These devices convert spoken words into digital data that can be processed and understood by a computer system.
Q16. Which input device allows a computer to accept input just by seeing an object?
a) Vision input system
b) Touch screen
c) Light pen
d) Digital pen
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Correct Answer: a) Vision input system
Explanation: A vision input system allows a computer to accept input just by seeing an object. The input data in this case is normally an object’s shape and features in the form of an image. Computer vision is a scientific discipline concerned with the theory behind artificial systems that extract information from images.
Q17. Which input device is used to read barcodes?
a) Barcode reader
b) OCR
c) OMR
d) MICR
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Correct Answer: a) Barcode reader
Explanation: A barcode reader is an input device used to read barcodes. It scans the barcode and converts the information encoded in the barcode into digital data that can be processed by a computer system.
Q18. Which input device is used to read magnetic ink characters printed on documents, such as checks?
a) MICR
b) OCR
c) OMR
d) Barcode reader
Show Answer
Correct Answer: a) MICR
Explanation: Magnetic Ink Character Recognition (MICR) is an input device used to read magnetic ink characters printed on documents, such as checks. MICR devices can quickly and accurately read the information encoded in the magnetic ink, making them useful for processing financial documents.
Q19. Which input device is used to capture an image of a document and convert it into digital data?
a) Image scanner
b) OCR
c) OMR
d) MICR
Show Answer
Correct Answer: a) Image scanner
Explanation: An image scanner is an input device used to capture an image of a document and convert it into digital data. Scanners use sensors to detect the light reflected from the document and create a digital representation of the image, which can then be stored, edited, or processed by a computer system.
Q20. Which input device is used to detect the presence or absence of light when it touches a screen?
a) Light pen
b) Digital pen
c) Touch screen
d) Trackball
Show Answer
Correct Answer: a) Light pen
Explanation: A light pen is a light-sensitive input device that detects the presence or absence of light when it touches a screen. It is used to select an entry or indicate a position on a display screen. Light pens can be used for various applications, such as choosing options on a screen or producing drawings on a screen using a special function pad and a keyboard.
More MCQ on Computer GK for Competitive Exams
- Introduction to Computer
- Basic Computer Organization
- Number Systems
- Computer Codes
- Processor and Memory
- Secondary Storage Devices
- Input and Output Devices
- Computer Software
- Flowchart and Computer Languages
- System Implementation
- Operating Systems
- Application Software Packages
- Business Data Processing
- Communications and Networks
- Internet Concepts and IoT
- Multimedia and File Extensions
- Classification of Computers
- Cyber Safety and Cyber Crime
- Computer Viruses and Security
- Basic Computer Shortcut Keys
- Shortcut Keys for Windows
- Shortcut Keys for MS Excel
- Shortcut Keys for MS Word
- Computer Abbreviations Set 1
- Computer Abbreviations Set 2
- Computer Abbreviations Set 3
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