Hardware Devices Module 1.2
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Questions and Answers

Which of the following is NOT considered an input device?

  • Keyboard
  • Mouse
  • Touch screen
  • Printer (correct)

    • What does the CPU do in the information processing cycle?

  • Displays the final results
  • Receives information from the user
  • Processes data into meaningful information (correct)
  • Stores data permanently

    • What is the main purpose of output devices?

  • To communicate with other computers
  • To capture data for later processing
  • To store large amounts of data
  • To present processed information to the user (correct)

    • Which of the following is an example of a storage device?

    <p>Hard drive (D)</p> Signup and view all the answers

    What is the main advantage of combining multiple input and output sources?

    <p>Improving the efficiency and productivity of the system (D)</p> Signup and view all the answers

    What is the minimum resolution required for a digital camera to produce good images for printing?

    <p>300 dpi (D)</p> Signup and view all the answers

    Which of the following is NOT an advantage of digital cameras?

    <p>High resolution images, even in low light conditions (D)</p> Signup and view all the answers

    What is the maximum color depth currently available for digital cameras?

    <p>32 bits (D)</p> Signup and view all the answers

    What is the main limitation of a webcam?

    <p>Low resolution (C)</p> Signup and view all the answers

    What is the function of the lock switch on a scanner?

    <p>To prevent the scanner from scanning (D)</p> Signup and view all the answers

    What is the primary purpose of a webcam?

    <p>To enable video communication over the internet (B)</p> Signup and view all the answers

    Which of the following is NOT a factor to consider when buying a digital camera?

    <p>Network connectivity (B)</p> Signup and view all the answers

    What is the key difference between a digital camera and a webcam?

    <p>Digital cameras have higher resolution than webcams (B)</p> Signup and view all the answers

    Which of the following devices is not considered "easily damaged and scratched"?

    <p>SSD (B)</p> Signup and view all the answers

    Which device is most susceptible to damage when moved or dropped while in use?

    <p>Hard drive (A)</p> Signup and view all the answers

    Which of the following is NOT an advantage of a 3G modem?

    <p>Reliable connection like a fixed line (B)</p> Signup and view all the answers

    What is an advantage of an ADSL modem/router over a 3G modem?

    <p>ADSL modem/routers are more stable as they are not dependent on cellphone reception. (A)</p> Signup and view all the answers

    Which of these devices is NOT considered an output device?

    <p>Scanner (A)</p> Signup and view all the answers

    Which device is commonly used for capturing images and transforming them into digital data?

    <p>Digital camera (A)</p> Signup and view all the answers

    Which of the following is NOT true about SSDs compared to traditional hard drives?

    <p>SSDs have larger storage capacities. (C)</p> Signup and view all the answers

    Which of the following is NOT a benefit of using an ADSL modem/router?

    <p>Suitable for both urban and rural areas. (B)</p> Signup and view all the answers

    Which device is primarily used to enter data or commands into a computer?

    <p>Keyboard (A)</p> Signup and view all the answers

    Which of the following is NOT a reason why optical media (CDs/DVDs) can be easily damaged?

    <p>Wiping the disc with a soft damp cloth. (A)</p> Signup and view all the answers

    What does a higher pixel density on a display improve?

    <p>Clarity and readability (A)</p> Signup and view all the answers

    What is a significant drawback of low contrast ratios in images?

    <p>Images become soft and muddy (A)</p> Signup and view all the answers

    If an image appears blocky or stretched, which settings might need adjustment?

    <p>Resolution settings (D)</p> Signup and view all the answers

    What could cause a display issue where the image is tinted purple or blue?

    <p>Faulty connection (A)</p> Signup and view all the answers

    Which advantage is specific to using headphones?

    <p>They allow private listening without disturbing others (A)</p> Signup and view all the answers

    What is a limitation of using speakers for sound playback?

    <p>They need additional audio equipment to play loud enough for a group (C)</p> Signup and view all the answers

    If headphones or speakers are not producing sound, what could be the likely problem?

    <p>They are plugged into the wrong jack (A)</p> Signup and view all the answers

    What must be checked first if there is no display on a monitor?

    <p>Power status and connections (D)</p> Signup and view all the answers

    What is the primary purpose of a webcam software?

    <p>To test and troubleshoot webcam functionality. (D)</p> Signup and view all the answers

    Identify a limitation associated with microphones?

    <p>They can struggle to deliver clear audio in noisy environments. (B)</p> Signup and view all the answers

    What is a key function of an output device?

    <p>To display or convey the processed information to the user. (A)</p> Signup and view all the answers

    What is a central advantage of using a monitor?

    <p>It offers immediate feedback and user interaction with the computer. (C)</p> Signup and view all the answers

    What does 'resolution' refer to in the context of a monitor?

    <p>The clarity and sharpness of the displayed image. (A)</p> Signup and view all the answers

    What does 'color depth' refer to in relation to monitor image quality?

    <p>The range of hues and tones a monitor can reproduce. (C)</p> Signup and view all the answers

    What is a significant limitation of monitors in terms of output sharing?

    <p>They typically require a separate projector for displaying content to a larger audience. (B)</p> Signup and view all the answers

    What is a major advantage of using a projector?

    <p>It allows for presenting information to a large audience simultaneously. (B)</p> Signup and view all the answers

    Which of these factors is NOT typically considered when buying a mouse?

    <p>Color (B)</p> Signup and view all the answers

    What is the main advantage of a touch screen over a mouse?

    <p>Combines mouse and keyboard functionality (C)</p> Signup and view all the answers

    Which of these statements is NOT a limitation of a touch pad?

    <p>Requires a separate surface area (C)</p> Signup and view all the answers

    What is the primary function of OCR (Optical Character Recognition) when used with a scanner?

    <p>Converting scanned images to editable text (B)</p> Signup and view all the answers

    Which of the following is NOT a benefit of using a scanner in an office setting?

    <p>Scanners can create high-quality images from any source (C)</p> Signup and view all the answers

    How can a scanner be used in a Point of Sale (POS) system?

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

    Which of the following is NOT a problem associated with a wireless mouse?

    <p>Limited range of motion due to the wireless connection (C)</p> Signup and view all the answers

    What is the most common solution for a sticky mouse?

    <p>Cleaning the mouse sensor and surface (C)</p> Signup and view all the answers

    Which of the following is NOT a recommended solution for a wired mouse that is not responding?

    <p>Checking the battery (D)</p> Signup and view all the answers

    Which of these is NOT a limitation of touch screens?

    <p>Touch screens can be less precise than a mouse (B)</p> Signup and view all the answers

    Flashcards

    Information Processing Cycle

    A sequence of input, processing, output, and storage of data.

    Input Devices

    Hardware that allows users to provide data to a computer.

    Output Devices

    Hardware that outputs processed data for users to see or hear.

    Storage Devices

    Hardware used to permanently keep data and information.

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    Communication Devices

    Hardware that allows data transmission between computers or networks.

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    Mouse Uses

    Interacts with the graphical user interface (GUI) through clicks and gestures.

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    Mouse Advantages

    Easy to learn and effective for GUI interaction; can be used with keyboard.

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    Mouse Limitations

    Best for fixed workspaces; not ideal for drawing tasks.

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    Touch Screen Uses

    Replaces mouse; supports gestures and on-screen interactions.

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    Touch Screen Advantages

    Intuitive natural input; increases available display space.

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    Touch Screen Limitations

    On-screen keyboards are harder to use; performance varies by OS.

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    Touch Pad Uses

    Replaces the mouse on devices like laptops; same functionalities.

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    Touch Pad Limitations

    Less precise than a mouse; limited space for gestures.

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    Scanner Uses

    Captures images and converts documents to digital format.

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    Scanner Advantages

    Digital formats save space; enables text conversion with OCR.

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    Pixel Density

    The number of pixels per inch on a display, affecting clarity and readability.

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    Refresh Rate

    The number of times per second a display updates its image, measured in Hertz (Hz).

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    Contrast Ratio

    The difference in luminance between the darkest black and the brightest white on a display.

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    Image Blockiness

    A visual distortion often due to incorrect resolution settings, making images look pixelated.

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    Color Tint Issues

    Color distortions in images that may indicate faulty connections or hardware problems.

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    Power Issues

    Problems resulting from the device not being switched on or improper connections, leading to no display.

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    Headphones vs Speakers

    Headphones deliver private sound, while speakers allow group listening but may lack quality for small devices.

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    Sound Quality Dependence

    The quality of sound from headphones or speakers varies with the type of peripheral used.

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    Cleaning a disc

    Wipe a disc with a soft damp cloth to avoid damage.

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    Discs and damage

    Discs are easily scratched and difficult to repair, usually requiring replacement.

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    State of SSD

    SSD (Solid State Drive) is faster, more energy-efficient and has no moving parts.

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    SSD disadvantages

    SSDs are more expensive and have smaller capacities than traditional hard drives.

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    3G Modem usage

    A 3G modem allows internet access where there is cellphone reception.

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    3G Modem limitations

    3G modems can be lost, not as reliable, and dependent on signal strength.

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    ADSL Modem/Router

    ADSL provides a digital link for phone and internet use simultaneously.

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    ADSL advantages

    ADSL is cheaper and more stable than 3G for internet access.

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    Data transfer speed

    ADSL speeds drop with distance from the telephone exchange.

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    Input vs Output Devices

    Input devices allow data entry; output devices provide results.

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    Non-responsive scanner

    A scanner that is not functioning properly, requiring checks.

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    Digital camera uses

    Captures images and videos, can replace barcode scanners.

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    Digital camera advantages

    Offers easy-to-use, digital photo options, and instant viewing.

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    Digital camera limitations

    Photos can be lost, quality reliant on camera specs.

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    Camera resolution

    Measured in pixels and dpi; affects image quality.

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    Webcam uses

    Facilitates video communication and live feeds.

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    Webcam limitations

    Often has low resolution; dependent on connection.

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    Troubleshooting webcam

    Check if it's plugged in, switched on, and selected.

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    Webcam Software

    Software used to test and troubleshoot webcams.

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    Microphone Uses

    Devices for recording sound and giving voice commands.

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    Microphone Limitations

    Built-in microphones often lack sound quality and can be hard to use in noise.

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    Output Definition

    How an ICT device displays processed results.

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    Monitor Uses

    Devices providing interactive feedback and visual alerts.

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    Monitor Limitations

    Display quality is affected by size and light, limiting portability.

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    Resolution in Monitors

    The number of horizontal pixels multiplied by vertical pixels.

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    Color Depth

    Maximum colors displayed; higher bits mean better quality.

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    Study Notes

    Hardware Devices Module 1.2

    • The module covers hardware devices, including input, output, storage, and communication devices.
    • The information processing cycle is central to the module.
    • Input devices receive data and instructions, including keyboard, mouse, touch pad, touch screen, scanner, digital camera, webcam, and microphone.
    • Output devices display processed results, such as monitor or display, printer, speakers or headphones, and LCD projector.
    • Storage devices store data permanently, including hard drive, external drive, optical media (CDs/DVDs), and SSD.
    • Communication devices allow interaction, such as 3G modem and ADSL modem/router.

    Information Processing Cycle

    • Input, processing, storage, and output form the cycle.
    • Input data is received by the computer.
    • Processing involves step-by-step solutions (algorithms).
    • Data input is processed to create output information.
    • Output is the final product of the processing cycle.
    • Input devices capture data, processing converts data to information, storage devices save information, output devices present information.

    Input Devices

    • Keyboard: Typing in text, giving commands, fastest way to enter text, easy to learn and use, takes up space, skills required.
    • Mouse: Interact with GUI, click, double-click, right-click, scrolling, drag, useful whilst pressing other keys, best for a fixed workplace.
    • Touch Screen: Replacement for mouse and keyboard, functions as both mouse and keyboard, easy to use, natural interactions, increases space and usability.
    • Touch Pad: Replaces the mouse, easy for the user, not as accurate as a mouse, difficult to use, limited size.
    • Scanner: Capture images from paper, convert documents to digital format, convert image into editable text using OCR, convert film photos, benefits the environment by reducing paper and ink usage, works best with single pages.
    • Digital Camera: Capture images and videos, easy to use, photos in digital format, not expensive, instant view, doubles as a video camera.
    • Webcam: Internet video communication, live feeds of events, remote control of security cameras, video calls.

    Output Devices

    • Monitor or Display: Interactive feedback, extra visual alerts for hearing impaired people, immediate feedback, interaction between user and computer, text can be enlarged for visually impaired, good quality display is related to the size of the monitor.
    • Printer: Laser printer is fast, high-quality text, low running costs, expensive to buy, not the best for high quality printing. Inkjet printer is cheaper but slower, best for photo printing, some toner is not absorbed. Dot-matrix printer is cheap but has poor quality.
    • Speakers or Headphones: Play sound, provide audible feedback, extra notifications, listen to voice messages or interact on Skype.
    • LCD Projector: Project a large image to a large audience, allows the display to be viewed by a large group of people, quality and clarity are not as good as monitors.

    Storage Devices

    • Hard Drive: Store data and software permanently, larger capacity than RAM, cheaper per GB, and easy to damage.
    • External Hard Drive: Store and carry media, data, and software around, store backups safely away from the computer, add extra storage to the computer.
    • Flash Drive: Portable, fast data access, inexpensive, useful for taking and distributing data and software, easily lost but useful to store files, higher per GB than hard drives.
    • Optical Media (CDs/DVDs): To distribute software and content, and for backup, inexpensive, relatively small capacity, vulnerable to damage, slow, and not as good as flash drives.

    Communication Devices

    • 3G Modem: Access the Internet wherever there is cellphone reception, easy to install and use, small, good speed.

    • ADSL Modem/Router: Digital link to the telephone company's network, includes switch functionality, has wireless connectivity, and allows for Internet connection sharing, need specialized equipment such as the telephone exchange.

    Problem Solving

    • Various troubleshooting techniques for different computer hardware are given.

    Other Information

    • Page 31 and questions 1-23, page 32, and questions 24 to 30, complete written module activity on page 33, 34 and questions 44-58 for further study.
    • Questions 31 through 43, page 51 covered. Completed written module activity.

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    Hardware Devices Module 1.2 PDF

    Description

    This quiz covers essential concepts of hardware devices including input, output, storage, and communication devices. It also explores the information processing cycle, detailing how data is captured, processed, and displayed. Test your knowledge on the key components and functions of hardware in computing.

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