CAT Module 1.7 - Extended Hardware Concepts
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Questions and Answers

What is the most common type of mouse?

  • A mouse with a pointing stick
  • A mouse with two buttons and a scroll wheel (correct)
  • A mouse with a trackball
  • A mouse with one button

    • What is the purpose of a touch pad?

    A touch pad is a pressure sensitive surface that allows the user to control the cursor on a computer screen.

    Pointing sticks are still a common feature on most laptops.

    False

    A stylus is used with a digitalizing tablet.

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

    What is a trackball used for?

    <p>A trackball is used to control the cursor on a computer screen.</p> Signup and view all the answers

    Touch screens can be used as both an input and an output device.

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

    What does an accelerometer detect?

    <p>An accelerometer detects movement.</p> Signup and view all the answers

    A temperature sensor is used to safeguard the electronics of devices in hot environments.

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

    What is the purpose of a light sensor in a smartphone?

    <p>A light sensor adjusts the brightness of the screen based on the ambient light level.</p> Signup and view all the answers

    What does an electronic compass do?

    <p>An electronic compass detects the direction in which the device is pointing.</p> Signup and view all the answers

    What is a proximity sensor used for in a smartphone?

    <p>A proximity sensor is used to detect if something is close to the phone screen. This is mostly used during phone calls.</p> Signup and view all the answers

    What does a magnetometer do?

    <p>A magnetometer measures the strength of the magnetic field around the device to determine its direction of movement.</p> Signup and view all the answers

    What is a gyroscope used for?

    <p>A gyroscope helps to correct camera shake.</p> Signup and view all the answers

    Controlling a game with a keyboard is more intuitive and enjoyable than using a joystick.

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

    Which of these is NOT a type of gaming device?

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

    Digital cameras require the user to purchase film.

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

    How can you extend the memory of a digital camera?

    <p>The memory can be extended by storing data on an SD card as well as internal memory.</p> Signup and view all the answers

    Which of these is a function of a flatbed scanner?

    <p>All of the above</p> Signup and view all the answers

    Sheetfed scanners are larger than flatbed scanners.

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

    What is a QR code designed to do?

    <p>A QR code is designed to allow you to quickly obtain and enter longer text information.</p> Signup and view all the answers

    Most modern smartphones have QR code readers built into the camera app.

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

    Where are barcode readers commonly used?

    <p>Barcode readers are commonly used in places like shops and libraries.</p> Signup and view all the answers

    What is biometric technology used for?

    <p>Biometric technology measures something biologically unique to an individual, such as fingerprints or iris patterns.</p> Signup and view all the answers

    Biometric flash drives are becoming less popular.

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

    Modern bank cards use magnetic strips to store data.

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

    What is the purpose of RFID technology?

    <p>RFID technology utilizes radio waves to store and transmit data.</p> Signup and view all the answers

    What does OMR stand for?

    <p>OMR stands for Optical Mark Recognition.</p> Signup and view all the answers

    What is the main function of an optical character recognition (OCR) device?

    <p>OCR converts scanned images of text into editable text documents.</p> Signup and view all the answers

    What are some reasons why you might want to get video onto a computer?

    <p>Reasons include editing videos into movies or clips, adding video to presentations, carrying on video communication, and sharing with friends using services like YouTube.</p> Signup and view all the answers

    How can you get video onto your computer?

    <p>All of the above</p> Signup and view all the answers

    To input live sound, you need a microphone.

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

    What is sound mainly used for in computers?

    <p>Sound is used for giving the user feedback when interacting with the computer, making it easier for disabled people to use computers by reading interface items to them, making games more realistic, and turning computers into entertainment devices.</p> Signup and view all the answers

    What is a data projector used for?

    <p>A data projector is used to display images and content from a computer onto a larger screen or wall.</p> Signup and view all the answers

    Multi-function printers can act as a printer, scanner, fax machine, and photocopier.

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

    What are the advantages of using a multi-function printer?

    <p>Multi-function printers save space, cost less, and only require a single USB connection port.</p> Signup and view all the answers

    A fax machine is a standalone device that transmits images via a telephone line to another fax machine.

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

    Fax-to-email allows you to send a fax to someone’s email address.

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

    What is the purpose of storage devices and media?

    <p>Storage devices and media are used to store and retrieve digital data.</p> Signup and view all the answers

    CD’s are typically used to distribute TV series and movies.

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

    What type of reader is used to access information on CD’s, DVD’s, and Blu-Ray discs?

    <p>Optical readers are used to access information stored on CD’s, DVD’s, and Blu-Ray discs.</p> Signup and view all the answers

    A card reader connects to a computer and allows you to access data on memory cards.

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

    The motherboard is the largest circuit board in a computer.

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

    What is the main function of the CPU?

    <p>The CPU, or Central Processing Unit, is the brain of the computer. It is responsible for processing data and carrying out instructions.</p> Signup and view all the answers

    RAM is non-volatile, meaning it retains its data even when the power is turned off.

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

    What is the role of ROM?

    <p>ROM, or Read Only Memory, is a special chip on the motherboard that holds instructions needed to start the computer.</p> Signup and view all the answers

    What is the purpose of DIMMs?

    <p>DIMMs, or Dual Inline Memory Modules, are the modules that house and contain the actual RAM chips in a computer.</p> Signup and view all the answers

    Study Notes

    Input Devices

    • These devices allow users to enter data into a computer system.
    • Examples include:
      • Mouse: A common pointing device with buttons and a scroll wheel. Gaming mice often feature various shapes and RGB lighting.
      • Touchpad: Pressure-sensitive surfaces built into laptops. Some include buttons for clicking. They track finger movement.
      • Pointing Stick: A small button between the keys on laptops. Less common than other pointing devices, except in business laptops.
      • Pen Input: Pressure-sensitive input device for digitising tablets. Called a stylus (Apple's is the Apple Pencil).
      • Trackball: A device with a large ball for users to move a pointer on the screen. Often used by people with disabilities.
      • Touchscreen: Used on smartphones and tablets. Users interact with the system using gestures.

    Sensors

    • These devices detect and respond to changes in their environment.
    • Examples include:
      • Accelerometer: Detects movement. Allows devices to change screen orientation and act as game controllers.
      • Temperature Sensor: Found in many devices. Protects electronics from overheating in hot environments (e.g., car dashboards). Can switch the device off until it cools down.
      • Light Sensor: Adjusts screen brightness, automatically lowering for your surroundings. Used to turn off the screen when holding a cellphone to your ear to prevent accidental actions like opening apps.
      • Electronic Compass: Works like a compass, showing the direction the device is pointing.

    Gaming Devices

    • These devices are specifically designed for controlling games.
    • Examples include:
      • Joystick: A controller for video games.
      • Complete Driving Seat: Includes steering wheels for games.
      • Controller: Generally used for playing video games.

    Other Devices

    • These devices serve a variety of functions.
    • Examples include:
      • Digital Camera: Easy and cheap to use.
      • Flatbed Scanner: A larger scanner that scans larger items such as magazines or books.
      • Sheetfed Scanner: A smaller scanner that scans individual pages (not entire books).
      • QR Code Readers: Codes that allow you to quickly access information from a mobile device camera.
      • Barcode Readers: Shining lasers through black and white lines (barcodes) to determine the item they are associated with in POS systems.
      • Biometric Scanners: Measure unique biological traits like fingerprints or eye patterns (used for security).
      • Card Input: For bank cards; modern cards have a chip instead of magnetic strips to prevent copying.
      • RFID (Radio Frequency Identification): Small radio devices to store and transmit data (e.g., microchipping pets, building access).
      • OMR (Optical Mark Recognition): Computerised marking devices used to scan and mark tests (used in educational settings).
      • MICR (Magnetic Ink Character Recognition): Bank cheques use special ink and this technology is used to quickly process them.
      • OCR (Optical Character Recognition): Converts scanned documents into editable text documents.

    Video & Audio Input

    • These devices allow users to input video and audio data into a computer system
    • Examples include:
      • Video input devices enable transferring video from
        • Webcams, Smart Devices, cameras by:
        • Plugging USB or FireWire cable into computer
        • Removing storage cards
    • Audio input devices allow the user to input sound into a computer system
      • Examples include: microphones.

    Video & Audio Output

    • These devices convey processed video and audio data from a computer to the user
    • Examples include:
      • Audio Output devices for use with:
        • Speakers, headphones and headsets.
      • Data Projectors: Projecting the computer's display onto another surface.

    Storage Devices & Media

    • These devices and materials allow users to store data.
    • Examples include:
      • CDs, DVDs, Blu-rays
        • Store large amounts of information
        • Read by optical readers
      • Memory Cards
        • Store digital photos, files, apps and videos for devices such as phones, tablets, and digital cameras.
        • Use card Readers to access information.

    Processing

    • These are the components responsible for executing tasks.
    • Examples include:
      • Motherboard
      • CPU (Central Processing Unit)
      • RAM (Random Access Memory)
      • ROM (Read Only Memory)

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