Computer hardware
64 Questions
Computer hardware MCQs — Practice & Prepare
✅ Correct answer: 360°
A joystick allows movement in a full 360-degree range of motion, giving players precise directional control in games and simulations.
✅ Correct answer: Light Pen
A light pen is a pointing device that lets users make drawings, create graphics, and select items from on-screen menus by directly touching a light-sensitive tip to the screen.
✅ Correct answer: Touch screen
Touch screens are commonly used in applications like ATMs, hospital kiosks, and airline reservation systems, since they offer a simple, intuitive way for users to interact directly with the display.
✅ Correct answer: Mouse, Keyboard, Scanner
Mouse, keyboard, and scanner are all input devices, used to enter data or commands into the computer, unlike monitors, printers, and plotters, which are output devices.
✅ Correct answer: barcodes
The pattern of parallel printed lines found on most retail products, used to identify and price items, is called a barcode.
✅ Correct answer: input device
A barcode reader (scanner) is an input device, used to read and convert the printed barcode pattern into digital data the computer can process.
✅ Correct answer: OMR
An OMR (Optical Mark Reader/Recognition) is an optical input device that detects and interprets pencil or pen marks made on paper, commonly used for grading multiple-choice exam sheets.
✅ Correct answer: All of these
OCR (Optical Character Recognition) technology is used in preparing various bills, including electricity, insurance, and telephone bills, by automatically reading printed text from documents.
✅ Correct answer: shape
OCR recognizes characters by analyzing their shape, using a light source to scan and match printed letters and numbers against known character patterns.
✅ Correct answer: Magnetic Ink Character Recognition
MICR stands for Magnetic Ink Character Recognition, a technology that reads specially printed characters (using magnetic ink) commonly found on bank cheques.
✅ Correct answer: OCR
MICR (Magnetic Ink Character Recognition) technology is widely used by banks to process large volumes of cheques quickly and accurately, reading the magnetic ink characters printed at the bottom.
✅ Correct answer: Both 'A' and 'B'
Smart cards can come in two main kinds: memory cards (which simply store data) and microprocessor cards (which have an embedded chip capable of processing data), making both correct.
✅ Correct answer: Biometric sensor
A biometric sensor is a device that recognizes unique physical traits of an individual — such as fingerprints, iris patterns, or facial features — for identification and security purposes.
✅ Correct answer: scanner
A printer is a device that makes physical copies of digital text and images, reproducing them onto paper.
35
A…….. is used to read handwritten or printed text to make a digital image that is stored in memory.
✅ Correct answer: scanner
A scanner is used to read handwritten or printed text/images and convert them into a digital image file that can be stored in the computer's memory.
✅ Correct answer: scanner
A scanner is the appropriate input device to convert a printed diagram or document into a digital image that can be viewed and edited on a computer.
✅ Correct answer: Both 'A' and 'B'
A scanner is capable of scanning both pictures and text, converting either type of printed content into a digital image file.
✅ Correct answer: webcam
A webcam is a video capturing device, used to record or stream live video, commonly used for video calls, conferencing, and recording.
✅ Correct answer: Input
A digital camera is an input device, since it captures images and video and feeds that visual data into a computer or storage device for processing.
✅ Correct answer: All of these
Digital camcorders, microphones, and scanners are all examples of digital input devices, each capturing different types of real-world data (video, audio, or images) and converting them into digital form for the computer.