Digital Imaging and Scanning Technologies
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Questions and Answers

What is the primary function of a data collection device?

  • To display text and graphics
  • To obtain data directly at the transaction location (correct)
  • To store data permanently
  • To process data into a useful form

    • A display can only convey text and graphics, not audio or video information.

    False

    Name one type of advanced digital television.

    HDTV

    The quality of a display is primarily determined by its resolution, response time, and _____ ratio.

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

    Which port is NOT mentioned as suitable for high-quality images?

    <p>USB port</p> Signup and view all the answers

    A Smart TV is a type of digital television that has Internet capabilities.

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

    What types of output can be produced by a display?

    <p>Text, graphics, audio, and video</p> Signup and view all the answers

    Match the following types of output with their descriptions:

    <p>Text = Written information displayed on screens Graphics = Visual images or designs Audio = Sound produced by electronic devices Video = Moving visual images</p> Signup and view all the answers

    What is the primary purpose of a videoconference?

    <p>To connect geographically separated individuals</p> Signup and view all the answers

    A flatbed scanner creates a physical copy of the document.

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

    What does OCR stand for?

    <p>Optical Character Recognition</p> Signup and view all the answers

    A ______ reader uses laser beams to read bar codes.

    <p>bar code</p> Signup and view all the answers

    Match the following devices with their primary function:

    <p>Scanner = Reads printed text and graphics Optical Reader = Converts marks and codes into digital data Bar Code Reader = Reads bar codes using laser beams QR Code = Stores information vertically and horizontally</p> Signup and view all the answers

    Which device is capable of translating printed text into a computer-readable format?

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

    A QR code can only be read in one direction.

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

    What technology does a bar code scanner employ to read information?

    <p>Laser beams</p> Signup and view all the answers

    Which of the following is not a type of nonimpact printer?

    <p>Dot matrix printer</p> Signup and view all the answers

    All printers use ink to produce graphics and text.

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

    What technology do many photo printers use to produce images?

    <p>Ink-jet technology</p> Signup and view all the answers

    A __________ printer produces quality photos often comparable to those from a photo lab.

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

    Match the following printers to their descriptions:

    <p>Ink-jet printer = Sprays drops of ink onto paper Laser printer = Uses laser technology and toner 3-D printer = Produces three-dimensional objects Label printer = Creates labels for various uses</p> Signup and view all the answers

    What is one of the main factors to consider when purchasing a printer?

    <p>The number of pages it can print per minute</p> Signup and view all the answers

    Mobile printers are a type of nonimpact printer.

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

    Name one type of nonimpact printer that can produce 3D objects.

    <p>3-D printer</p> Signup and view all the answers

    What mechanism do impact printers use to create characters and graphics?

    <p>Striking pins against an inked ribbon</p> Signup and view all the answers

    Surround sound speakers are only used with game consoles.

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

    What is the function of a data projector?

    <p>To project text and images from a computer or mobile device onto a larger screen.</p> Signup and view all the answers

    Headphones are speakers that cover or are placed outside of the ______.

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

    Match the following output devices to their descriptions:

    <p>Impact Printer = Forms characters by striking an inked ribbon Surround Sound Speakers = Generates higher-quality sounds Data Projector = Projects images on a larger screen Interactive Whiteboard = Touch-sensitive device displaying connected computer screen</p> Signup and view all the answers

    Which of the following is NOT a type of output device?

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

    Earbuds are also known as earphones.

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

    What type of device resembles a dry-erase board and is touch-sensitive?

    <p>Interactive whiteboard</p> Signup and view all the answers

    Which of the following devices can be considered output devices when they include force feedback?

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

    A Braille printer is an example of assistive technology used for input.

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

    What technology is used to send resistance to input devices in response to user actions?

    <p>Force feedback</p> Signup and view all the answers

    A camera/receiver on the monitor tracks the position of the head-mounted ______, which moves the pointer on the screen.

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

    Match the following devices with their functions:

    <p>Joystick = Gaming input device with force feedback Braille printer = Output device for translating text into Braille Head-mounted pointer = Assistive device for controlling a computer screen Force feedback = Technology enhancing user interaction experience</p> Signup and view all the answers

    Study Notes

    Videoconferencing

    • Videoconferencing enables meetings between geographically separated individuals.
    • Large businesses use videoconferencing for cost savings on travel expenses.

    Scanners

    • Scanners are light-sensing input devices that translate printed text and graphics into computer-readable formats.
    • A flatbed scanner functions similarly to a photocopier but saves the document as a file in memory instead of a paper copy.

    Optical Readers

    • Optical readers use light sources to interpret characters, marks, and codes, converting them into digital data.
    • Optical character recognition (OCR) is a type of optical reader technology.
    • Optical mark recognition (OMR) is another type of optical reader technology.

    Bar code readers

    • Bar code readers use laser beams to read bar codes.
    • Bar code readers are used to track various items such as clothing.

    QR Codes

    • QR codes store information both vertically and horizontally.
    • QR codes allow for payments made by scanning an on-screen code.

    Data Collection Devices

    • Data collection devices gather data directly at the location where the transaction or event occurs.
    • Data collection devices are used in warehouses to scan items and wirelessly transmit information to inventory systems.

    Output

    • Output refers to processed data in a usable format.
    • Output can manifest as text, graphics, audio, or video.

    Displays

    • Displays visually present text, graphic, and video information.
    • Monitors are independent peripheral devices that act as displays.
    • LCD monitors are a common type of monitor.
    • The quality of a display is determined by its resolution, response time, brightness, dot pitch, and contrast ratio.
    • Today's monitors utilize digital signals for picture generation.
    • DVI, HDMI, and Display Port connections offer high-quality image display.
    • Digital televisions (DTVs) can serve as displays for home users.
    • HDTV is the most advanced digital television format.
    • Smart TVs are Internet-enabled HDTVs.

    Printers

    • Printers are output devices that produce text and graphics on physical media.
    • When choosing a printer, consider factors such as printing costs, speed, features, and intended use.
    • Nonimpact printers create characters and graphics without physical contact with the paper.
    • Ink-jet printers use liquid ink droplets to form characters and graphics.
    • Photo printers are designed for professional-quality photo printing.
    • Laser printers use toner powder for printing.
    • All-in-one printers combine multiple functionalities like printing, scanning, and copying.
    • 3-D printers create three-dimensional objects using various materials.
    • Thermal printers use heat to create printed images.
    • Mobile printers are portable devices designed for printing from mobile devices.
    • Label printers produce labels with text, graphics, and barcodes.
    • Plotters produce larger-scale prints, often used in engineering and architecture.
    • Large-format printers handle even larger prints, exceeding the size limitations of typical printers.
    • Impact printers use a striking mechanism to contact the paper, forming characters and graphics.

    Other Output Devices

    • Surround sound speakers enhance audio output for computers, gaming consoles, and mobile devices.
    • Headphones deliver private audio output.
    • Earbuds, also known as earphones, fit within the ear canal.
    • Data projectors project images onto a larger screen, making them visible to an audience.
    • Interactive whiteboards are touch-sensitive devices that display computer screen content.
    • Gaming controllers with force feedback provide realistic resistance to user actions, enhancing the gaming experience.

    Assistive Technology Input and Output

    • Assistive technology provides accessibility solutions for individuals with disabilities.
    • Head-mounted pointers allow users to control computer functions using head movements.
    • Braille printers generate output in the form of Braille.

    Summary

    • Computer systems offer a wide range of input and output options.
    • Assistive technology addresses the input and output needs of individuals with disabilities.

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    Description

    This quiz covers various technologies related to digital imaging and scanning, including videoconferencing, scanners, optical readers, and QR codes. Explore how these devices enable communication and data entry in today's digital world.

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