HP ENVY 34inch Archives

HP ENVY 34inch Archives

HP ENVY 34inch Archives

HP ENVY 34inch Archives

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SUPPORT COMMUNICATION- CUSTOMER NOTICE

Document ID: c05377979

Version: 5

Notice: HP ENVY 34c 34-inch Media Display and HP EliteDisplay S340c 34-inch Curved Monitor - Using the Windows Hello Facial Recognition Feature

Notice:: The information in this document, including products and software versions, is current as of the release date.The information in this document is subject to change without notice.

Release date : 19-Jan-2017

Last updated : 02-Aug-2017

Potential Security Impact:
The HP ENVY 34c 34-inch Media Display and the HP EliteDisplay S340c 34-inch Curved Monitor have a built-in IR camera that can be used for the Windows 10 facial recognition feature (Windows Hello).
There may be issues with setting up Windows Hello including the following:
Issue 1:
After installing the IR camera driver and running the Hello setup process, the computer's builtin in webcam may stop working. This issue is caused by a conflict between the Hello IR camera (on the monitor) and the computer's built in webcam.
Issue 2:
The Hello setup process may fail because with one of the following symptoms:
  • "Not enough USB Controller resources" error message appears when setting up
  • The Hello setup process hangs (no indication of progress)
Issue 3:
When the PC goes into sleep mode, upon recovery the IR camera will not restart. Windows displays a message that it is starting the camera, or cannot start the camera, and the Hello functionality is not enabled.
Issue 4:
When Hello does not recognize the users face, or cannot start the camera after the PC has been rebooted.
Issue 5:
When using a laptop with a built in webcam, Skype may not allow the user to select the monitor webcam.
Issue 6:
When using two S340c/ENVY34 monitors, Skype may not allow you to select the webcam of the second monitor.

Source:HP, HP Product Security Response Team (PSRT)

Details
Setting up Windows Hello and resolving possible issues.
Setting up the display
  1. The webcam must be in the up position. If it is not, press down and release to raise it.

  2. Connect the display and install the software that came with it.
  3. Connect to the internet and run Windows Update (this will install the latest drivers).
  4. On the computer, go to Settings > Account > Sign-in Options > Windows Hello to enable the feature. As part of the setup process, you must set a PIN code.
  5. Once the Windows Hello feature is enabled, there is a training process that must be completed. Sit so that you are centered in the screen with your face about 1 meter (inches ) from the display while performing the training exercise.
Resolving Issue 1: Prerequisites
To use the IR camera in the displays for Windows Hello facial recognition, make sure the following pre-requisites are met and then complete the steps for setting up the display.
  1. The computer must be running Windows 10 (Windows 7 and Windows 8 do not support Windows Hello facial recognition).
  2. A driver must be installed to enable the Hello support (The Windows Hello Webcam driver is installed on Windows Anniversary Update and earlier versions of Windows 10. The Windows 10 v1703 Hello Webcam driver is installed on the Creators Update and later versions of Windows 10.). If needed, this driver can be automatically downloaded using Windows update after the monitor is installed. The driver is also included on the documentation CD and can be downloaded from hp.com/support:
    SoftPaq Description
    Release Notes
    Download SoftPaq
    Microsoft Windows Hello Webcam Driver for HP Displays
    Version: 2.00
    Revision: A
    Microsoft Windows 10 v1703 Hello Webcam Driver for HP Displays
    Version: 2.10
    Revision: A
    NOTE: A more recent version of this software may be available. Check for newer versions at http://www.hp.com/drivers..
  3. If the computer already has Windows Hello support (built-in IR camera), the PC camera must be disabled in Device Manager before the camera on the display can be used.
Resolving Issue 2: Update the monitor webcam firmware and re-run Windows Hello setup
  1. Download the RGB Camera firmware update tool from hp.com ( sp81543.exe).
  2. Run the firmware update tool on the PC connected to the monitor.
  3. Unplug the power adapter from the monitor for 30 seconds, and then reconnect.
  4. Reboot the PC.
Resolving Issue 3: Set the monitor "Power Mode" to "Performance"
  1. Open the Main-Menu of the monitor OSD.
  2. Select "Power Control" in the Main-Menu.
  3. Select "Power Mode" in the "Power Control" menu.
  4. Enable "Performance" mode. This keeps the monitor USB electronics active in Sleep and Off modes.
Resolving Issue 4: Disable Windows Hello and the run the Hello setup again
  1. Select Settings > Account > Sign-in Options > Face Recognition then click the Remove button.
  2. Select Settings > Account > Sign-in Options > Windows Hello > Face, then click the Setup button.
Resolving Issue 5: Update the monitor webcam firmware and update Skype settings.
  1. Download the RGB Camera firmware update tool from hp.com ( ).
  2. Run the firmware update tool on the PC connected to the monitor.
  3. In Desktop mode, right-click on the Windows Menu (lower left corner of screen) and select Device Manager.
  4. Expand Imaging Devices.
  5. Right-click HP HD Camera (or similar device), and select Remove.
  6. Reboot the PC.
  7. Open the Skype settings menu and select the HP Display Camera monitor webcam.
Resolving Issue 6: Work around the issue by disconnecting the first webcam.
  1. Push-down the webcam module for the first monitor so it is in the down and locked position (hidden). If both webcams are still visible in Skype, disconnect the USB cable to the PC for the first monitor.
  2. Open the Skype settings menu and select the (second) monitor webcam.
  3. Reconnect the USB cable for the first monitor if needed.
HP Inc. shall not be liable for technical or editorial errors or omissions contained herein.The information provided is provided "as is" without warranty of any kind.To the extent permitted by law, neither HP or its affiliates, subcontractors or suppliers will be liable for incidental, special or consequential damages including downtime cost; lost profits; damages relating to the procurement of substitute products or services; or damages for loss of data, or software restoration.The information in this document is subject to change without notice.HP Inc. and the names of HP products referenced herein are trademarks of HP Inc. in the United States and other countries.Other product and company names mentioned herein may be trademarks of their respective owners.

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Источник: [https://torrent-igruha.org/3551-portal.html], HP ENVY 34inch Archives

HP ENVY 34c Media Display - Product Specifications

  • 3440 x 1440 WQHD resolution, plus full-screen support for lower resolutions

  • Light-emitting diode (LED) backlit monitor with an active matrix, PVA panel

  • Wide viewing angle technology and 3000r (3000mm) curved arc to provide an immersive viewing experience with increased field of vision,. enhanced peripheral readability, and improved visual perception

  • One HDMI and one MHL/HDMI video input

  • DisplayPort video input

  • PIP functionality to enable the DisplayPort and HDMI inputs to be viewed in a small secondary window or side-by-side on the main window

  • Integrated DTS 6-Watt speakers for a premium audio experience

  • Audio-out (headphone) jack

  • Remote control

  • On-Screen Display (OSD) adjustments in several languages for easy setup and screen optimization

  • My Display software or HP Display Assistant software (depending on the model) included for adjusting monitor settings

  • Tilt capability

  • Plug and play capability if supported by your operating system

  • HDCP (High-bandwidth Digital Content Protection) used on digital inputs

  • Software and documentation disc that includes monitor drivers and product documentation

  • VESA mounting bracket for attaching the display to a wall mount device or swing arm (select models only)

  • USB 3.0 hub with one upstream port and two downstream ports with BC1.2 (for charging of select smartphones and tablets)

  • Источник: [https://torrent-igruha.org/3551-portal.html]
    HP ENVY 34inch Archives

    Welcome to the wtg buying guide for the Best HP Monitor 2020. We’ll provide an in-depth list that includes the best hp monitor overall, the best hp monitor for work, the best hp gaming monitor, and even (very specifically) the best hp 23.8-inch fhd ips monitor.

    Now that people stream movies and TV and play high-resolution games on their computers, monitors have gotten considerably more use and sophistication. Hewlett-Packard (HP) has held its own in the competitive computer industry since 1939.

    They were pioneers in the tech industry and even inspired other great businesses such as Apple. They continue to make high quality computer products including monitors, that satisfy the high demands of content viewers and creators of today.

    The HP 27Q Pavilion is a newly released HP product for 2020 and has something for everyone. It has a spacious 27 inch screen that delivers a ultra sharp details and captivating definition via QHD. With those key qualities it can increase productivity for work related tasks, and then seamlessly transition to any entertainment content of choice.

    What may be surprising (in a good way) about the HP 27Q Pavilion, is the price. HP strives to make their products affordable to virtually everyone, while not comprising on quality. So everyone from a college student to a business professional should get their hands on this monitor while it’s still available.

    For those looking for a bit more than the HP 27Q Pavilion, and are willing to pay more… the HP Envy 34c may be exactly what you’re looking for.

    It has a massive 34 inch curved screen that pulls you into whatever content your viewing. The WQHD resolution is virtually 4k so you’ll see every detail when streaming your favorite content or playing a pc game. The huge “real estate” (screen area) enables high level multi-tasking without the need for multiple monitors. It even has high quality speakers integrated to save space (compared to external speakers).

    If you want a HP monitor that maximizes your productivity levels, as well as creating the ultimate viewing experience, you should get the HP Envy 34c.

    If gaming is your thing, the HP Omen is one of the most powerful monitors listed, which provides a blistering 165Hz refresh rate to ensure you have an edge over the competition. The screen is also larger than most at 27 inches.

    The monitor not only performs but it also looks great. It seems to say with it’s inconspicuous style: I’m a serious gamer, and I strive for the top of the leaderboard.

    The HP Omen is a gaming beast, and it should not be overlooked by serious gamers. Obtain this monitor while it is still in stock.

    Budget is considered by many when purchasing items online. The HP 23 provides a solution specifically for those who want a high quality HP monitor at a low price. It’s 23.8 inch screen is not the largest monitor, but for many with limited desk space it may be perfect.

    It handles everything it should from microsoft word documents, browsing online, video content, and to pc games.

    The HP 23 is a good monitor with a very affordable price.

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    hp computer monitor

    computer monitor is an output device that displays information in pictorial form. A monitor usually comprises the display device, circuitry, casing, and power supply. The display device in modern monitors is typically a thin film transistor liquid crystal display (TFT-LCD) with LED backlighting having replaced cold-cathode fluorescent lamp (CCFL) backlighting. Older monitors used a cathode ray tube (CRT). Monitors are connected to the computer via VGA, Digital Visual Interface (DVI), HDMI, DisplayPort, Thunderbolt, low-voltage differential signaling (LVDS) or other proprietary connectors and signals.

    hp computer monitor

    Originally, computer monitors were used for data processing while television sets were used for entertainment. From the 1980s onwards, computers (and their monitors) have been used for both data processing and entertainment, while televisions have implemented some computer functionality. The common aspect ratio of televisions, and computer monitors, has changed from 4:3 to 16:10, to 16:9.

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    Modern computer monitors are easily interchangeable with conventional television sets. However, as computer monitors do not necessarily include integrated speakers, it may not be possible to use a computer monitor without external components.[1]

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    Early electronic computers were fitted with a panel of light bulbs where the state of each particular bulb would indicate the on/off state of a particular register bit inside the computer. This allowed the engineers operating the computer to monitor the internal state of the machine, so this panel of lights came to be known as the ‘monitor’. As early monitors were only capable of displaying a very limited amount of information and were very transient, they were rarely considered for program output. Instead, a line printer was the primary output device, while the monitor was limited to keeping track of the program’s operation.[citation needed]

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    As technology developed engineers realized that the output of a CRT display was more flexible than a panel of light bulbs and eventually, by giving control of what was displayed in the program itself, the monitor itself became a powerful output device in its own right.[citation needed]

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    Computer monitors were formerly known as visual display units (VDU), but this term had mostly fallen out of use by the 1990s.

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    The first computer monitors used cathode ray tubes (CRTs). Prior to the advent of home computers in the late 1970s, it was common for a video display terminal (VDT) using a CRT to be physically integrated with a keyboard and other components of the system in a single large chassis. The display was monochrome and far less sharp and detailed than on a modern flat-panel monitor, necessitating the use of relatively large text and severely limiting the amount of information that could be displayed at one time. High-resolution CRT displays were developed for the specialized military, industrial and scientific applications but they were far too costly for general use.

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    Some of the earliest home computers (such as the TRS-80 and Commodore PET) were limited to monochrome CRT displays, but color display capability was already a standard feature of the pioneering Apple II, introduced in 1977, and the specialty of the more graphically sophisticated Atari 800, introduced in 1979. Either computer could be connected to the antenna terminals of an ordinary color TV set or used with a purpose-made CRT color monitor for optimum resolution and color quality. Lagging several years behind, in 1981 IBM introduced the Color Graphics Adapter, which could display four colors with a resolution of 320 x 200 pixels, or it could produce 640 x 200 pixels with two colors. In 1984 IBM introduced the Enhanced Graphics Adapter which was capable of producing 16 colors and had a resolution of 640 x 350.[2]

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    By the end of the 1980s color CRT monitors that could clearly display 1024 x 768 pixels were widely available and increasingly affordable. During the following decade, maximum display resolutions gradually increased and prices continued to fall. CRT technology remained dominant in the PC monitor market into the new millennium partly because it was cheaper to produce and offered to view angles close to 180 degrees.[3] CRTs still offer some image quality advantages[clarification needed] over LCDs but improvements to the latter have made them much less obvious. The dynamic range of early LCD panels was very poor, and although text and other motionless graphics were sharper than on a CRT, an LCD characteristic known as pixel lag caused moving graphics to appear noticeably smeared and blurry.

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    There are multiple technologies that have been used to implement liquid crystal displays (LCD). Throughout the 1990s, the primary use of LCD technology as computer monitors was in laptops where the lower power consumption, lighter weight, and smaller physical size of LCDs justified the higher price versus a CRT. Commonly, the same laptop would be offered with an assortment of display options at increasing price points: (active or passive) monochrome, passive color, or active matrix color (TFT). As volume and manufacturing capability have improved, the monochrome and passive color technologies were dropped from most product lines.

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    TFT-LCD is a variant of LCD which is now the dominant technology used for computer monitors.[4]

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    The first standalone LCDs appeared in the mid-1990s selling for high prices. As prices declined over a period of years they became more popular, and by 1997 were competing with CRT monitors. Among the first desktop LCD computer monitors was the Eizo L66 in the mid-1990s, the Apple Studio Display in 1998, and the Apple Cinema Display in 1999. In 2003, TFT-LCDs outsold CRTs for the first time, becoming the primary technology used for computer monitors.[3] The main advantages of LCDs over CRT displays are that LCDs consume less power, take up much less space, and are considerably lighter. The now common active matrix TFT-LCD technology also has less flickering than CRTs, which reduces eye strain.[5] On the other hand, CRT monitors have superior contrast, have a superior response time, are able to use multiple screen resolutions natively, and there is no discernible flicker if the refresh rate[6] is set to a sufficiently high value. LCD monitors have now very high temporal accuracy and can be used for vision research.[7]

    hp computer monitor

    High dynamic range (HDR)[6] has been implemented into high-end LCD monitors to improve color accuracy. Since around the late 2000s, widescreen LCD monitors have become popular, in part due to television series, motion pictures and video games transitioning to high-definition (HD), which makes standard-width monitors unable to display them correctly as they either stretch or crop HD content. These types of monitors may also display it in the proper width, however they usually fill the extra space at the top and bottom of the image with black bars. Other advantages of widescreen monitors over standard-width monitors is that they make work more productive by displaying more of a user’s documents and images, and allow displaying toolbars with documents. They also have a larger viewing area, with a typical widescreen monitor having a 16:9 aspect ratio, compared to the 4:3 aspect ratio of a typical standard-width monitor.

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    The performance of a monitor is measured by the following parameters:

    • Luminance is measured in candelas per square meter (cd/m2 also called a Nit).
    • Color depth is measured in bits per primary color or bits for all colors.
    • Gamut is measured as coordinates in the CIE 1931 color space. The names sRGB or AdobeRGB are shorthand notations.
    • Aspect ratio is the ratio of the horizontal length to the vertical length. Monitors usually have the aspect ratio 4:3, 5:4, 16:10 or 16:9.
    • Viewable image size is usually measured diagonally, but the actual widths and heights are more informative since they are not affected by the aspect ratio in the same way. For CRTs, the viewable size is typically 1 in (25 mm) smaller than the tube itself.
    • Display resolution is the number of distinct pixels in each dimension that can be displayed. For a given display size, maximum resolution is limited by dot pitch.
    • Dot pitch is the distance between sub-pixels of the same color in millimeters. In general, the smaller the dot pitch, the sharper the picture will appear.
    • Refresh rate is the number of times in a second that a display is illuminated. Maximum refresh rate is limited by response time.
    • Response time is the time a pixel in a monitor takes to go from active (white) to inactive (black) and back to active (white) again, measured in milliseconds. Lower numbers mean faster transitions and therefore fewer visible image artifacts.
    • Contrast ratio is the ratio of the luminosity of the brightest color (white) to that of the darkest color (black) that the monitor is capable of producing.
    • Power consumption is measured in watts.
    • Delta-E: Color accuracy is measured in delta-E; the lower the delta-E, the more accurate the color representation. A delta-E of below 1 is imperceptible to the human eye. Delta-Es of 2 to 4 are considered good and require a sensitive eye to spot the difference.
    • Viewing angle is the maximum angle at which images on the monitor can be viewed, without excessive degradation to the image. It is measured in degrees horizontally and vertically.
    • On two-dimensional display devices such as computer monitors the display size or view able image size is the actual amount of screen space that is available to display a picture, video or working space, without obstruction from the case or other aspects of the unit’s design. The main measurements for display devices are: width, height, total area and the diagonal.

    hp 23.8-inch fhd ips monitor

    The size of a display is usually by monitor manufacturers given by the diagonal, i.e. the distance between two opposite screen corners. This method of measurement is inherited from the method used for the first generation of CRT television, when picture tubes with circular faces were in common use. Being circular, it was the external diameter of the glass envelope that described their size. Since these circular tubes were used to display rectangular images, the diagonal measurement of the rectangular image was smaller than the diameter of the tube’s face (due to the thickness of the glass). This method continued even when cathode ray tubes were manufactured as rounded rectangles; it had the advantage of being a single number specifying the size, and was not confusing when the aspect ratio was universally 4:3.

    hp 23.8-inch fhd ips monitor

    With the introduction of flat panel technology, the diagonal measurement became the actual diagonal of the visible display. This meant that an eighteen-inch LCD had a larger visible area than an eighteen-inch cathode ray tube.

    hp 23.8-inch fhd ips monitor

    The estimation of the monitor size by the distance between opposite corners does not take into account the display aspect ratio, so that for example a 16:9 21-inch (53 cm) widescreen display has less area, than a 21-inch (53 cm) 4:3 screen. The 4:3 screen has dimensions of 16.8 in × 12.6 in (43 cm × 32 cm) and area 211 sq in (1,360 cm2), while the widescreen is 18.3 in × 10.3 in (46 cm × 26 cm), 188 sq in (1,210 cm2).

    hp 23.8-inch fhd ips monitor

    computer monitor is an output device that displays information in pictorial form. A monitor usually comprises the display device, circuitry, casing, and power supply. The display device in modern monitors is typically a thin film transistor liquid crystal display (TFT-LCD) with LED backlighting having replaced cold-cathode fluorescent lamp (CCFL) backlighting. Older monitors used a cathode ray tube (CRT). Monitors are connected to the computer via VGA, Digital Visual Interface (DVI), HDMI, DisplayPort, Thunderbolt, low-voltage differential signaling (LVDS) or other proprietary connectors and signals.

    hp 27 inch monitor

    Originally, computer monitors were used for data processing while television sets were used for entertainment. From the 1980s onwards, computers (and their monitors) have been used for both data processing and entertainment, while televisions have implemented some computer functionality. The common aspect ratio of televisions, and computer monitors, has changed from 4:3 to 16:10, to 16:9.

    hp 27 inch monitor

    Modern computer monitors are easily interchangeable with conventional television sets. However, as computer monitors do not necessarily include integrated speakers, it may not be possible to use a computer monitor without external components.[1]

    hp 27 inch monitor

    Early electronic computers were fitted with a panel of light bulbs where the state of each particular bulb would indicate the on/off state of a particular register bit inside the computer. This allowed the engineers operating the computer to monitor the internal state of the machine, so this panel of lights came to be known as the ‘monitor’. As early monitors were only capable of displaying a very limited amount of information and were very transient, they were rarely considered for program output. Instead, a line printer was the primary output device, while the monitor was limited to keeping track of the program’s operation.[citation needed]

    hp 27 inch monitor

    As technology developed engineers realized that the output of a CRT display was more flexible than a panel of light bulbs and eventually, by giving control of what was displayed in the program itself, the monitor itself became a powerful output device in its own right.[citation needed]

    hp 27 inch monitor

    Computer monitors were formerly known as visual display units (VDU), but this term had mostly fallen out of use by the 1990s.

    hp gaming monitor

    The first computer monitors used cathode ray tubes (CRTs). Prior to the advent of home computers in the late 1970s, it was common for a video display terminal (VDT) using a CRT to be physically integrated with a keyboard and other components of the system in a single large chassis. The display was monochrome and far less sharp and detailed than on a modern flat-panel monitor, necessitating the use of relatively large text and severely limiting the amount of information that could be displayed at one time. High-resolution CRT displays were developed for the specialized military, industrial and scientific applications but they were far too costly for general use.

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    Some of the earliest home computers (such as the TRS-80 and Commodore PET) were limited to monochrome CRT displays, but color display capability was already a standard feature of the pioneering Apple II, introduced in 1977, and the specialty of the more graphically sophisticated Atari 800, introduced in 1979. Either computer could be connected to the antenna terminals of an ordinary color TV set or used with a purpose-made CRT color monitor for optimum resolution and color quality. Lagging several years behind, in 1981 IBM introduced the Color Graphics Adapter, which could display four colors with a resolution of 320 x 200 pixels, or it could produce 640 x 200 pixels with two colors. In 1984 IBM introduced the Enhanced Graphics Adapter which was capable of producing 16 colors and had a resolution of 640 x 350.[2]

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    By the end of the 1980s color CRT monitors that could clearly display 1024 x 768 pixels were widely available and increasingly affordable. During the following decade, maximum display resolutions gradually increased and prices continued to fall. CRT technology remained dominant in the PC monitor market into the new millennium partly because it was cheaper to produce and offered to view angles close to 180 degrees.[3] CRTs still offer some image quality advantages[clarification needed] over LCDs but improvements to the latter have made them much less obvious. The dynamic range of early LCD panels was very poor, and although text and other motionless graphics were sharper than on a CRT, an LCD characteristic known as pixel lag caused moving graphics to appear noticeably smeared and blurry.

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    computer monitor is an output device that displays information in pictorial form. A monitor usually comprises the visual display, circuitry, casing, and power supply. The display device in modern monitors is typically a thin film.

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    There are multiple technologies that have been used to implement liquid crystal displays (LCD). Throughout the 1990s, the primary use of LCD technology as computer monitors was in laptops where the lower power consumption, lighter weight, and smaller physical size of LCDs justified the higher price versus a CRT. Commonly, the same laptop would be offered with an assortment of display options at increasing price points: (active or passive) monochrome, passive color, or active matrix color (TFT). As volume and manufacturing capability have improved, the monochrome and passive color technologies were dropped from most product lines.

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    TFT-LCD is a variant of LCD which is now the dominant technology used for computer monitors.[4]

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    The first standalone LCDs appeared in the mid-1990s selling for high prices. As prices declined over a period of years they became more popular, and by 1997 were competing with CRT monitors. Among the first desktop LCD computer monitors was the Eizo L66 in the mid-1990s, the Apple Studio Display in 1998, and the Apple Cinema Display in 1999. In 2003, TFT-LCDs outsold CRTs for the first time, becoming the primary technology used for computer monitors.[3] The main advantages of LCDs over CRT displays are that LCDs consume less power, take up much less space, and are considerably lighter. The now common active matrix TFT-LCD technology also has less flickering than CRTs, which reduces eye strain.[5] On the other hand, CRT monitors have superior contrast, have a superior response time, are able to use multiple screen resolutions natively, and there is no discernible flicker if the refresh rate[6] is set to a sufficiently high value. LCD monitors have now very high temporal accuracy and can be used for vision research.[7]

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    High dynamic range (HDR)[6] has been implemented into high-end LCD monitors to improve color accuracy. Since around the late 2000s, widescreen LCD monitors have become popular, in part due to television series, motion pictures and video games transitioning to high-definition (HD), which makes standard-width monitors unable to display them correctly as they either stretch or crop HD content. These types of monitors may also display it in the proper width, however they usually fill the extra space at the top and bottom of the image with black bars. Other advantages of widescreen monitors over standard-width monitors is that they make work more productive by displaying more of a user’s documents and images, and allow displaying toolbars with documents. They also have a larger viewing area, with a typical widescreen monitor having a 16:9 aspect ratio, compared to the 4:3 aspect ratio of a typical standard-width monitor.

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    Early electronic computers were fitted with a panel of light bulbs where the state of each particular bulb would indicate the on/off state of a particular register bit inside the computer. This allowed the engineers operating the computer to monitor the internal state of the machine, so this panel of lights came to be known as the ‘monitor’. As early monitors were only capable of displaying a very limited amount of information and were very transient, they were rarely considered for program output. Instead, a line printer was the primary output device, while the monitor was limited to keeping track of the program’s operation.[citation needed]

    As technology developed engineers realized that the output of a CRT display was more flexible than a panel of light bulbs and eventually, by giving control of what was displayed in the program itself, the monitor itself became a powerful output device in its own right.[citation needed]

    Computer monitors were formerly known as visual display units (VDU), but this term had mostly fallen out of use by the 1990s.

    hp computer monitor

    Multiple technologies have been used for computer monitors. Until the 21st century most used cathode ray tubes but they have largely been superseded by LCD monitors.

    hp computer monitor

    The first computer monitors used cathode ray tubes (CRTs). Prior to the advent of home computers in the late 1970s, it was common for a video display terminal (VDT) using a CRT to be physically integrated with a keyboard and other components of the system in a single large chassis. The display was monochrome and far less sharp and detailed than on a modern flat-panel monitor, necessitating the use of relatively large text and severely limiting the amount of information that could be displayed at one time. High-resolution CRT displays were developed for the specialized military, industrial and scientific applications but they were far too costly for general use.

    hp computer monitor

    Some of the earliest home computers (such as the TRS-80 and Commodore PET) were limited to monochrome CRT displays, but color display capability was already a standard feature of the pioneering Apple II, introduced in 1977, and the specialty of the more graphically sophisticated Atari 800, introduced in 1979. Either computer could be connected to the antenna terminals of an ordinary color TV set or used with a purpose-made CRT color monitor for optimum resolution and color quality. Lagging several years behind, in 1981 IBM introduced the Color Graphics Adapter, which could display four colors with a resolution of 320 x 200 pixels, or it could produce 640 x 200 pixels with two colors. In 1984 IBM introduced the Enhanced Graphics Adapter which was capable of producing 16 colors and had a resolution of 640 x 350.[2]

    hp computer monitor

    By the end of the 1980s color CRT monitors that could clearly display 1024 x 768 pixels were widely available and increasingly affordable. During the following decade, maximum display resolutions gradually increased and prices continued to fall. CRT technology remained dominant in the PC monitor market into the new millennium partly because it was cheaper to produce and offered to view angles close to 180 degrees.[3] CRTs still offer some image quality advantages[clarification needed] over LCDs but improvements to the latter have made them much less obvious. The dynamic range of early LCD panels was very poor, and although text and other motionless graphics were sharper than on a CRT, an LCD characteristic known as pixel lag caused moving graphics to appear noticeably smeared and blurry.

    hp computer monitor

    There are multiple technologies that have been used to implement liquid crystal displays (LCD). Throughout the 1990s, the primary use of LCD technology as computer monitors was in laptops where the lower power consumption, lighter weight, and smaller physical size of LCDs justified the higher price versus a CRT. Commonly, the same laptop would be offered with an assortment of display options at increasing price points: (active or passive) monochrome, passive color, or active matrix color (TFT). As volume and manufacturing capability have improved, the monochrome and passive color technologies were dropped from most product lines.

    hp computer monitor

    TFT-LCD is a variant of LCD which is now the dominant technology used for computer monitors.[4]

    hp computer monitor

    The first standalone LCDs appeared in the mid-1990s selling for high prices. As prices declined over a period of years they became more popular, and by 1997 were competing with CRT monitors. Among the first desktop LCD computer monitors was the Eizo L66 in the mid-1990s, the Apple Studio Display in 1998, and the Apple Cinema Display in 1999. In 2003, TFT-LCDs outsold CRTs for the first time, becoming the primary technology used for computer monitors.[3] The main advantages of LCDs over CRT displays are that LCDs consume less power, take up much less space, and are considerably lighter. The now common active matrix TFT-LCD technology also has less flickering than CRTs, which reduces eye strain.[5] On the other hand, CRT monitors have superior contrast, have a superior response time, are able to use multiple screen resolutions natively, and there is no discernible flicker if the refresh rate[6] is set to a sufficiently high value. LCD monitors have now very high temporal accuracy and can be used for vision research.[7]

    hp computer monitor

    High dynamic range (HDR)[6] has been implemented into high-end LCD monitors to improve color accuracy. Since around the late 2000s, widescreen LCD monitors have become popular, in part due to television series, motion pictures and video games transitioning to high-definition (HD), which makes standard-width monitors unable to display them correctly as they either stretch or crop HD content. These types of monitors may also display it in the proper width, however they usually fill the extra space at the top and bottom of the image with black bars. Other advantages of widescreen monitors over standard-width monitors is that they make work more productive by displaying more of a user’s documents and images, and allow displaying toolbars with documents. They also have a larger viewing area, with a typical widescreen monitor having a 16:9 aspect ratio, compared to the 4:3 aspect ratio of a typical standard-width monitor.

    hp computer monitor

    computer is a machine that can be instructed to carry out sequences of arithmetic or logical operations automatically via computer programming. Modern computers have the ability to follow generalized sets of operations, called programs. These programs enable computers to perform an extremely wide range of tasks. A “complete” computer including the hardware, the operating system (main software), and peripheral equipment required and used for “full” operation can be referred to as a computer system. This term may as well be used for a group of computers that are connected and work together, in particular a computer network or computer cluster.

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    Computers are used as control systems for a wide variety of industrial and consumer devices. This includes simple special purpose devices like microwave ovens and remote controls, factory devices such as industrial robots and computer-aided design, and also general purpose devices like personal computers and mobile devices such as smartphones. The Internet is run on computers and it connects hundreds of millions of other computers and their users.

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    Early computers were only conceived as calculating devices. Since ancient times, simple manual devices like the abacus aided people in doing calculations. Early in the Industrial Revolution, some mechanical devices were built to automate long tedious tasks, such as guiding patterns for looms. More sophisticated electrical machines did specialized analog calculations in the early 20th century. The first digital electronic calculating machines were developed during World War II. The first semiconductortransistors in the late 1940s were followed by the silicon-based MOSFET (MOS transistor) and monolithic integrated circuit (IC) chip technologies in the late 1950s, leading to the microprocessor and the microcomputer revolution in the 1970s. The speed, power and versatility of computers have been increasing dramatically ever since then, with MOS transistor counts increasing at a rapid pace (as predicted by Moore’s law), leading to the Digital Revolution during the late 20th to early 21st centuries.

    hp computer monitor

    Conventionally, a modern computer consists of at least one processing element, typically a central processing unit (CPU) in the form of a metal-oxide-semiconductor (MOS) microprocessor, along with some type of computer memory, typically MOS semiconductor memory chips. The processing element carries out arithmetic and logical operations, and a sequencing and control unit can change the order of operations in response to stored information. Peripheral devices include input devices (keyboards, mice, joystick, etc.), output devices (monitor screens, printers, etc.), and input/output devices that perform both functions (e.g., the 2000s-era touchscreen). Peripheral devices allow information to be retrieved from an external source and they enable the result of operations to be saved and retrieved.

    Electrical engineering is an engineering discipline concerned with the study, design and application of equipment, devices and systems which use electricity, electronics, and electromagnetism. It emerged as an identifiable occupation in the latter half of the 19th century after commercialization of the electric telegraph, the telephone, and electrical power generation, distribution and use.

    Electrical engineering is now divided into a wide range of fields, including computer engineering, power engineering, telecommunications, radio-frequency engineering, signal processing, instrumentation, and electronics. Many of these disciplines overlap with other engineering branches, spanning a huge number of specializations including hardware engineering, power electronics, electromagnetics and waves, microwave engineering, nanotechnology, electrochemistry, renewable energies, mechatronics, and electrical materials science.[a]

    Источник: [https://torrent-igruha.org/3551-portal.html]
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