Computer Input Devices Quiz
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Questions and Answers

Which of the following describes a function of input devices?

  • To enter data into the computer. (correct)
  • To produce printed output from the computer.
  • To display processed information.
  • To store data for future use.

    • Which of the following is a method of manual data input?

  • Directly transferring data from a database.
  • Barcode scanning.
  • Using a keyboard to type data. (correct)
  • Optical mark reading.

    • What is meant by 'automatic data input'?

  • Data is entered manually by the user.
  • Data must be formatted before entry into the system.
  • Data is stored in the computer for future input.
  • Data is captured from source documents directly into the computer. (correct)

    • What is the primary function of a keyboard as an input device?

    <p>To input data in the form of letters, numbers, and symbols</p> Signup and view all the answers

    Which of the following is NOT an example of an input device?

    <p>Printer</p> Signup and view all the answers

    Which of the following are types of keyboards mentioned?

    <p>Alphanumeric and special-function keyboards</p> Signup and view all the answers

    What is the initial stage of entering data into a computer called?

    <p>Data capture</p> Signup and view all the answers

    Which input device is typically used for precise control in gaming and design?

    <p>Mouse</p> Signup and view all the answers

    What type of input device would you use to scan documents into digital format?

    <p>Flatbed scanner</p> Signup and view all the answers

    Which device would best capture audio input?

    <p>Sound capture device</p> Signup and view all the answers

    Which device is considered a pointing device used to interact with graphical interfaces?

    <p>Joystick</p> Signup and view all the answers

    What is the primary purpose of an alphanumeric keyboard?

    <p>To provide a unique digital code when keys are pressed</p> Signup and view all the answers

    Which of the following is NOT a method to connect a keyboard to a computer?

    <p>Optical cable</p> Signup and view all the answers

    What feature distinguishes a Braille keyboard?

    <p>Keys marked with raised dots for tactile navigation</p> Signup and view all the answers

    How does an eye-controlled keyboard function?

    <p>By tracking eye movements to select keys</p> Signup and view all the answers

    In what scenario might a concept keyboard be particularly useful?

    <p>In early learning or restaurants where traditional keyboards can be risky</p> Signup and view all the answers

    What was one of the original design intentions behind the QWERTY keyboard?

    <p>To prevent typewriter keys from jamming by slowing down typists</p> Signup and view all the answers

    Which type of keyboard is most likely to include whole words or symbols superimposed over its surface?

    <p>Concept keyboard</p> Signup and view all the answers

    What is the primary function of a scanner?

    <p>To translate physical images into digital form</p> Signup and view all the answers

    Which type of scanner is most commonly used in the publishing industry for high-detail image capture?

    <p>Drum scanner</p> Signup and view all the answers

    What is a disadvantage of using a hand-held scanner compared to other types?

    <p>Poor image quality</p> Signup and view all the answers

    Which scanner type uses rollers to feed the image during the scanning process?

    <p>Sheet-fed scanner</p> Signup and view all the answers

    What is the primary function of the pointing stick mouse?

    <p>To move the pointer around the screen</p> Signup and view all the answers

    How does the touchpad mouse control the cursor on the screen?

    <p>By sensing pressure and motion on a flat surface</p> Signup and view all the answers

    How do flat-bed scanners typically capture images?

    <p>Using reflected light and laser beams on a flat surface</p> Signup and view all the answers

    What is a common application for using a hand-held scanner?

    <p>Capturing quick data in retail environments</p> Signup and view all the answers

    Which technology is used by the eye-controlled mouse?

    <p>Eye movements</p> Signup and view all the answers

    What is a typical cost range for a household flat-bed scanner?

    <p>Under 100 US dollars</p> Signup and view all the answers

    What is one of the main uses of a joystick?

    <p>Operating small levers for screen movement</p> Signup and view all the answers

    What does a digitising tablet primarily help users do?

    <p>Create and enter drawings or sketches into a computer</p> Signup and view all the answers

    Which scanner type is best suited for quick data capture despite lower image quality?

    <p>Hand-held scanner</p> Signup and view all the answers

    Which of the following is true about a stylus in relation to a digitising tablet?

    <p>It is a pen-like pointing device for interacting with the tablet</p> Signup and view all the answers

    What is necessary for a user to operate an eye-controlled mouse?

    <p>Special glasses or equipment</p> Signup and view all the answers

    What feature distinguishes the touchpad mouse from other pointing devices?

    <p>It has a touch-sensitive pad</p> Signup and view all the answers

    What action is generally used to select a command with the eye-controlled mouse?

    <p>Blinking once at an icon</p> Signup and view all the answers

    What type of touchscreen relies on the electrical flow between two layers to determine touch points?

    <p>Pressure sensitive</p> Signup and view all the answers

    Which touch-sensitive screen technology is primarily used in bank ATM machines?

    <p>Capacitive surface</p> Signup and view all the answers

    What is a primary advantage of using a light pen over a finger on a touch-sensitive screen?

    <p>It is more accurate for selections</p> Signup and view all the answers

    How does a capacitive surface touchscreen recognize a touch?

    <p>By monitoring the electrical charge transfer to the user’s finger</p> Signup and view all the answers

    Which type of scanning device is specifically designed to read magnetic ink characters?

    <p>Magnetic ink character recognition (MICR) reader</p> Signup and view all the answers

    In what way does a light beam touchscreen detect a touch?

    <p>It notes the disturbance of infrared light beams</p> Signup and view all the answers

    Which feature makes a digitizing tablet more accurate than a light pen for drawing?

    <p>More sensitivity to pressure and tilt</p> Signup and view all the answers

    What do optical mark readers (OMRs) primarily identify?

    <p>Marks or bubbles on paper</p> Signup and view all the answers

    Which of the following is NOT a type of scanning device mentioned?

    <p>Capacitive scanner</p> Signup and view all the answers

    Why might drawing with a light pen become uncomfortable over time?

    <p>The design is not ergonomically friendly</p> Signup and view all the answers

    Study Notes

    Importance of Input Devices

    • Computers require input, output, and storage devices to process data and produce results.
    • Peripherals are devices connected to a computer, crucial for operations.
    • Input devices specifically enter data into the computer for processing or storage.

    Data Collection Methods

    • Manual Data Input: Involves direct entry into the computer, typically using devices like keyboards and mice.
    • Automatic Data Input: Data is captured directly from source documents, such as barcodes or OMR forms.

    Common Input Devices

    • Examples include keyboards, mice, joysticks, digitizing tablets, touch screens, and various scanning devices.

    Keyboards

    • Most common input device, used for entering letters, numbers, and symbols.
    • Alphanumeric Keyboards: Standard QWERTY layout, connects via USB, wireless, on-screen, or integrated.
    • Special-Function Keyboards:
      • Braille Keyboard: For visually impaired users, featuring raised dots for typing.
      • Eye-Controlled Keyboard: Allows input via eye movement for physically disabled individuals.
      • Concept Keyboard: Flexible membrane keyboard used in specific environments like restaurants.

    Pointing Devices

    • Pointing Stick Mouse: Embedded in laptops, controls pointer movement through a pressure-sensitive stick.
    • Touchpad Mouse: A flat pressure-sensitive surface on laptops allowing cursor control with finger movements.
    • Eye-Controlled Mouse: Facilitates computer use through eye movements, selected by blinking.

    Joysticks and Graphic Tablets

    • Joysticks control object movement on screens, widely used in gaming.
    • Digitizing Tablets convert analog images into digital, utilizing styluses or pucks for input.

    Touch-sensitive Screens

    • Allow user interaction via touch, with types including:
      • Pressure Sensitive: Detects electrical flow upon touch from layered screens.
      • Capacitive: Utilizes electrical charge changes to determine touch points.
      • Light Beam: Based on disturbance of infrared beams upon contact.

    Scanning Devices

    • Include flat-bed, hand-held, drum, and sheet-fed scanners for digital data capture.
    • MICR Readers: Read encoded information on cheques for banking purposes using magnetic ink.
    • OMR Readers: Detect marks on forms, commonly used in exams and lotteries by analyzing light intensity.
    • OCR Readers: Convert scanned text into editable digital form.

    Barcode Readers

    • Read vertical barcodes to track inventory and sales, improving efficiency in checkout processes.

    Magnetic Strip Codes

    • Embedded in credit and debit cards, read by swiping to authorize transactions and access bank accounts.

    Audio and Video Input Devices

    • Include voice data entry systems, microphones, sound capture devices, and digital cameras.
    • Voice Recognition Systems: Convert spoken commands into data inputs, assisting users with disabilities in controlling devices through speech.

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    Description

    This quiz explores the importance of input devices in computer systems. Participants will learn about various peripherals and their roles in data entry, processing, and output generation. Test your knowledge on how keyboards, mice, and other input devices function within a computer setup.

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