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Questions and Answers
What is the primary function of a data collection device?
What is the primary function of a data collection device?
A display can only convey text and graphics, not audio or video information.
A display can only convey text and graphics, not audio or video information.
False
Name one type of advanced digital television.
Name one type of advanced digital television.
HDTV
The quality of a display is primarily determined by its resolution, response time, and _____ ratio.
The quality of a display is primarily determined by its resolution, response time, and _____ ratio.
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Which port is NOT mentioned as suitable for high-quality images?
Which port is NOT mentioned as suitable for high-quality images?
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A Smart TV is a type of digital television that has Internet capabilities.
A Smart TV is a type of digital television that has Internet capabilities.
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What types of output can be produced by a display?
What types of output can be produced by a display?
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Match the following types of output with their descriptions:
Match the following types of output with their descriptions:
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What is the primary purpose of a videoconference?
What is the primary purpose of a videoconference?
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A flatbed scanner creates a physical copy of the document.
A flatbed scanner creates a physical copy of the document.
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What does OCR stand for?
What does OCR stand for?
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A ______ reader uses laser beams to read bar codes.
A ______ reader uses laser beams to read bar codes.
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Match the following devices with their primary function:
Match the following devices with their primary function:
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Which device is capable of translating printed text into a computer-readable format?
Which device is capable of translating printed text into a computer-readable format?
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A QR code can only be read in one direction.
A QR code can only be read in one direction.
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What technology does a bar code scanner employ to read information?
What technology does a bar code scanner employ to read information?
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Which of the following is not a type of nonimpact printer?
Which of the following is not a type of nonimpact printer?
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All printers use ink to produce graphics and text.
All printers use ink to produce graphics and text.
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What technology do many photo printers use to produce images?
What technology do many photo printers use to produce images?
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A __________ printer produces quality photos often comparable to those from a photo lab.
A __________ printer produces quality photos often comparable to those from a photo lab.
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Match the following printers to their descriptions:
Match the following printers to their descriptions:
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What is one of the main factors to consider when purchasing a printer?
What is one of the main factors to consider when purchasing a printer?
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Mobile printers are a type of nonimpact printer.
Mobile printers are a type of nonimpact printer.
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Name one type of nonimpact printer that can produce 3D objects.
Name one type of nonimpact printer that can produce 3D objects.
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What mechanism do impact printers use to create characters and graphics?
What mechanism do impact printers use to create characters and graphics?
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Surround sound speakers are only used with game consoles.
Surround sound speakers are only used with game consoles.
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What is the function of a data projector?
What is the function of a data projector?
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Headphones are speakers that cover or are placed outside of the ______.
Headphones are speakers that cover or are placed outside of the ______.
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Match the following output devices to their descriptions:
Match the following output devices to their descriptions:
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Which of the following is NOT a type of output device?
Which of the following is NOT a type of output device?
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Earbuds are also known as earphones.
Earbuds are also known as earphones.
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What type of device resembles a dry-erase board and is touch-sensitive?
What type of device resembles a dry-erase board and is touch-sensitive?
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Which of the following devices can be considered output devices when they include force feedback?
Which of the following devices can be considered output devices when they include force feedback?
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A Braille printer is an example of assistive technology used for input.
A Braille printer is an example of assistive technology used for input.
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What technology is used to send resistance to input devices in response to user actions?
What technology is used to send resistance to input devices in response to user actions?
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A camera/receiver on the monitor tracks the position of the head-mounted ______, which moves the pointer on the screen.
A camera/receiver on the monitor tracks the position of the head-mounted ______, which moves the pointer on the screen.
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Match the following devices with their functions:
Match the following devices with their functions:
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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.
