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Computer monitor Wiki2Web Clarity Challenge

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Study Guide: Computer Monitors: Evolution and Technology

Cheat Sheet:
Computer Monitors: Evolution and Technology Study Guide

Fundamentals of Computer Monitors

A computer monitor's primary function is to process data.

Answer: False

Explanation: A computer monitor's primary function is to display information visually, not to process data.

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A discrete computer monitor is composed solely of a visual display and a power supply.

Answer: False

Explanation: A discrete computer monitor comprises a visual display, support electronics, a power supply, housing, electrical connectors, and user controls.

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Historical Development

Modern computer monitors predominantly use Cathode-Ray Tube (CRT) technology.

Answer: False

Explanation: Modern computer monitors predominantly use Liquid-Crystal Displays (LCD) with LED backlights, having largely replaced Cathode-Ray Tube (CRT) technology.

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Before the mid-2000s, CRT technology was the primary image output method for most computer monitors.

Answer: True

Explanation: Prior to the mid-2000s, Cathode-Ray Tube (CRT) technology was the predominant method for image output in most computer monitors.

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Computer monitors have always been exclusively used for data processing, separate from video display functions.

Answer: False

Explanation: Computer monitors' functions evolved; initially dedicated to data processing, they later became used for video display, while televisions began integrating computer functionalities.

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The term 'monitor' originated from the array of lights on early computer front panels indicating register bit states.

Answer: True

Explanation: The term 'monitor' originated from the array of indicator lights on early computer front panels, which showed the state of register bits.

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The primary output device for early computers was a line printer, while monitor panels only displayed program output.

Answer: False

Explanation: The primary output device for early computers was a line printer; monitor panels were primarily for observing system states, not displaying program output.

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Visual Display Units (VDU) was an older term for computer monitors, which became obsolete by the 1990s.

Answer: True

Explanation: Visual Display Unit (VDU) was an older term for computer monitors, especially common in British English, which largely fell out of use by the 1990s.

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Until the 21st century, LCD monitors were the primary technology for computer displays.

Answer: False

Explanation: Until the 21st century, Cathode-Ray Tube (CRT) technology was the primary display technology for computer monitors; LCDs became dominant later.

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Early monochromatic CRT displays could show a vast amount of detailed information due to their high sharpness.

Answer: False

Explanation: Early monochromatic CRT displays had limitations in displaying detailed information and sharpness, requiring larger text and restricting data quantity.

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The Tektronix 4010 terminal, released in 1972, made high-resolution CRT displays more commercially accessible.

Answer: True

Explanation: The Tektronix 4010 terminal, introduced in 1972, was an affordable option that increased the commercial accessibility of high-resolution CRT displays.

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The TRS-80 and Commodore PET computers were known for offering advanced color display capabilities from their introduction.

Answer: False

Explanation: The TRS-80 and Commodore PET computers were primarily limited to monochrome CRT displays, unlike some other early home computers that offered color.

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IBM's Color Graphics Adapter (CGA) could display 16 colors at a resolution of 640x350 pixels.

Answer: False

Explanation: IBM's Color Graphics Adapter (CGA) typically displayed fewer colors at lower resolutions; for instance, it could show four colors at 320x200 pixels, not 16 colors at 640x350.

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CRTs offered advantages over early LCDs in motion handling and latency.

Answer: True

Explanation: CRTs generally offered superior motion handling and lower latency compared to early LCD displays.

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Standalone LCD monitors began competing with CRT monitors in the late 1980s.

Answer: False

Explanation: Standalone LCD monitors began competing with CRT monitors in the mid-1990s, not the late 1980s.

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LCDs first outsold CRTs in the year 2003.

Answer: True

Explanation: LCDs first outsold CRTs in 2003, marking a significant transition in monitor technology.

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CRTs maintained advantages over LCDs in black levels and viewing angles.

Answer: True

Explanation: CRTs retained advantages over early LCDs in terms of superior black levels and wider viewing angles.

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Vision science research continues to use CRTs because LCD monitors have achieved superior temporal accuracy for such applications.

Answer: False

Explanation: Vision science research continues to use CRTs because LCD monitors have not yet achieved the necessary temporal accuracy for certain applications, not because LCDs have superior temporal accuracy.

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How did the usage of computer monitors and television sets evolve from the 1980s onwards?

Answer: Both began to be used for data processing and video display.

Explanation: From the 1980s, computer monitors increasingly handled video display, and televisions began incorporating computer functionalities, blurring their distinct roles.

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Where did the term 'monitor' originate in the context of early computers?

Answer: From the array of light bulbs on early computer front panels.

Explanation: The term 'monitor' originated from the array of indicator lights on early computer front panels, which allowed engineers to observe the machine's internal state.

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What was the primary output device for early computers before the widespread use of monitors for output?

Answer: Line printers

Explanation: Before the widespread adoption of monitors for output, line printers served as the primary output device for early computers.

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What was an alternative term for computer monitors, particularly in British English, that became largely obsolete by the 1990s?

Answer: Visual Display Unit (VDU)

Explanation: Visual Display Unit (VDU) was an older term for computer monitors, especially common in British English, which largely fell out of use by the 1990s.

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Until the 21st century, what technology was the primary display technology for computer monitors?

Answer: Cathode-Ray Tube (CRT)

Explanation: Cathode-Ray Tube (CRT) technology was the primary display technology for computer monitors until the early 21st century.

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Which terminal, released in 1972, is mentioned as making high-resolution CRT displays more commercially accessible?

Answer: Tektronix 4010

Explanation: The Tektronix 4010 terminal, released in 1972, is noted for making high-resolution CRT displays more commercially accessible.

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Which of these early home computers offered color display capabilities upon its introduction?

Answer: Atari 8-bit computers

Explanation: Atari 8-bit computers, introduced in 1979, were noted for offering color display capabilities, unlike the monochrome displays of the TRS-80 and Commodore PET.

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IBM's Enhanced Graphics Adapter (EGA), introduced in 1984, was capable of producing how many colors at a resolution of 640x350 pixels?

Answer: 16 colors

Explanation: IBM's Enhanced Graphics Adapter (EGA), released in 1984, could produce 16 colors at a resolution of 640x350 pixels.

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What advantage did CRTs retain over early LCDs in terms of visual performance?

Answer: Superior black levels and wider viewing angles

Explanation: CRTs maintained advantages over early LCDs, particularly in superior black levels and wider viewing angles.

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In what year did LCDs first outsell CRTs, signifying a major shift in monitor technology?

Answer: 2003

Explanation: LCDs first outsold CRTs in 2003, marking a significant transition in monitor technology.

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Modern Display Technologies

LCD technology's primary advantage for early laptops was its higher power consumption compared to CRTs.

Answer: False

Explanation: LCD technology's primary advantage for early laptops was its lower power consumption and lighter weight, not higher power consumption.

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TFT-LCD is a variant of LCD technology that is no longer dominant in the computer monitor market.

Answer: False

Explanation: TFT-LCD (Thin-Film Transistor Liquid-Crystal Display) is a variant of LCD technology that remains dominant in the computer monitor market.

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LCD monitors are physically heavier and consume more power than CRTs.

Answer: False

Explanation: LCD monitors are generally lighter, more compact, and consume less power than CRT monitors.

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What display technology has become dominant in modern computer monitors?

Answer: Liquid-Crystal Display (LCD) with LED backlights

Explanation: Liquid-Crystal Displays (LCDs), particularly those with LED backlights, have become the dominant technology in modern computer monitors.

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What was a primary advantage of LCD technology for early laptops?

Answer: Lower power consumption and lighter weight

Explanation: The primary advantages of LCD technology for early laptops were its lower power consumption and lighter weight, making it ideal for portable devices.

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Which of the following is a drawback of OLED monitors mentioned in the source?

Answer: Susceptibility to burn-in

Explanation: A noted drawback of OLED monitors is their susceptibility to burn-in, where static images displayed for extended periods can cause permanent discoloration.

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Display Performance Metrics

The standard display aspect ratio for monitors shifted from 16:9 to 4:3 around 2010.

Answer: False

Explanation: Around 2010, the standard display aspect ratio for monitors shifted from the traditional 4:3 to the wider 16:9 format.

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What was the standard display aspect ratio for televisions and computer monitors around 2010?

Answer: 16:9

Explanation: Around 2010, the industry standard aspect ratio for both televisions and computer monitors shifted to 16:9.

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What does 'aspect ratio' describe for a display?

Answer: The proportion of horizontal length to vertical length.

Explanation: Aspect ratio describes the proportion of a display's horizontal length to its vertical length.

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What does refresh rate measure in monitors?

Answer: How many times per second the display can change its image.

Explanation: Refresh rate measures how many times per second the display can update its image, determining the maximum frames per second (FPS) it can show.

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Color and Image Quality

High Dynamic Range (HDR) in LCD monitors aims to improve grayscale accuracy.

Answer: True

Explanation: High Dynamic Range (HDR) implemented in LCD monitors is intended to enhance grayscale accuracy and expand the range between the darkest and brightest image elements.

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What is the significance of a lower Delta-E (ΔE) value for color accuracy?

Answer: It signifies more accurate color representation.

Explanation: A lower Delta-E (ΔE) value signifies more accurate color representation, as it measures the perceptible difference between colors.

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What is the significance of a lower Delta-E (ΔE) value for color accuracy?

Answer: It signifies more accurate color representation.

Explanation: A lower Delta-E (ΔE) value signifies more accurate color representation, as it measures the perceptible difference between colors.

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Connectivity and Features

DisplayPort, HDMI, and USB-C are common wired connection interfaces for monitors.

Answer: True

Explanation: DisplayPort, HDMI, and USB-C are among the common wired connection interfaces used to connect monitors to host computers.

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Most computer monitors include integrated speakers and TV tuners.

Answer: False

Explanation: Most computer monitors do not typically include integrated speakers or TV tuners, unlike many television sets.

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Which wired connection interface was commonly used for monitors before the widespread adoption of HDMI and DisplayPort?

Answer: VGA

Explanation: VGA (Video Graphics Array) was a common wired connection interface for monitors prior to the widespread adoption of digital interfaces like HDMI and DisplayPort.

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Which of the following features is typically NOT integrated into most computer monitors but is common in television sets?

Answer: TV tuners

Explanation: TV tuners are commonly integrated into television sets but are typically absent from most computer monitors.

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What is the purpose of a screen hood on a professional monitor?

Answer: To block ambient light and reduce glare.

Explanation: A screen hood on a professional monitor is used to block ambient light, reducing glare and reflections to improve the visibility and accuracy of the displayed image.

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What is the purpose of a screen hood on a professional monitor?

Answer: To block ambient light and reduce glare.

Explanation: A screen hood on a professional monitor is used to block ambient light, reducing glare and reflections to improve the visibility and accuracy of the displayed image.

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Monitor Form Factors and Mounting

For curved monitors, the radius of curvature is measured in:

Answer: Millimeters (mm)

Explanation: The radius of curvature for curved monitors is measured in millimeters (mm).

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According to the source, what is the main difference between a fixed rack mount monitor and a stowable rack mount monitor?

Answer: Fixed monitors are permanently installed; stowable ones can be folded for storage.

Explanation: Fixed rack mount monitors are permanently installed, while stowable rack mount monitors are mounted on slides and can be folded into the rack for storage.

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Technical Specifications and Terminology

How is the viewable image size of a monitor typically measured?

Answer: Diagonally

Explanation: The viewable image size of a monitor is typically measured diagonally across the screen.

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What limits the maximum resolution on a given display size?

Answer: Dot pitch or DPI

Explanation: Dot pitch or DPI (dots per inch) limits the maximum resolution that can be displayed on a given screen size.

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What unit is used to measure luminance, and what is also commonly called a 'nit'?

Answer: Candela per square meter (cd/m²)

Explanation: Luminance is measured in candelas per square meter (cd/m²), which is also referred to as a 'nit'.

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What does the 'srcset' attribute in an image tag provide?

Answer: A list of image sources for different resolutions or pixel densities.

Explanation: The 'srcset' attribute in an image tag provides a list of image sources suitable for different resolutions or pixel densities, allowing the browser to select the most appropriate one.

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What does the 'reference-accessdate' span in a citation indicate?

Answer: The date the source was accessed or retrieved.

Explanation: The 'reference-accessdate' span in a citation indicates the date on which the source was accessed or retrieved, which is important for verifying the currency of online information.

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What does the 'srcset' attribute in an image tag provide?

Answer: A list of image sources for different resolutions or pixel densities.

Explanation: The 'srcset' attribute in an image tag provides a list of image sources suitable for different resolutions or pixel densities, allowing the browser to select the most appropriate one.

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What is the purpose of the 'archive' attribute in a citation?

Answer: To link to an archived version of an online source.

Explanation: The 'archive' attribute in a citation provides a link to an archived version of an online source, ensuring information remains accessible even if the original URL becomes unavailable.

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