Hello! For those who spend a lot of time at the computer, the comfort of work is of particular importance. I won’t “discover America” for anyone if I say that the monitor is one of the most important components of comfortable and productive work. Many users are wondering how to check the monitor for dead pixels, and doing this is as easy as shelling pears.

Today I will tell you how to check the monitor not only for pixels, but also for the uniformity of the backlight and the blurring of the picture.

Before proceeding to the tests, we will make a small digression and get acquainted with the concept RGB color model. RGB is an abbreviation for the English words Red Green Blue. This model is a method of color reproduction, which has found wide application in technology. The method is based on the peculiarities of color perception by the human retina. With this model, all colors reproduced by the monitor are output due to a combination of three primary colors - red, green and blue. That is why all tests for monitors work with these primary colors.

Online monitor test

For online testing, we need to go to the site - http://tft.vanity.dk

Go to the menu HTML window. In the first window in front of us is a scale of shades of gray, which allows you to compare close tones. If your monitor can see dark tones in 2% increments, then it's a good monitor. On the highest quality monitors, you can see the differences between the light tones.
Of course, the evaluation of the monitor does not end on this scale. If you move the mouse pointer to the top edge of the browser window, a menu with various test options opens up in front of us.

If the window with hints on the screen bothers you, you can turn it off by pressing the button "Info on/off" in the upper right corner of the popup menu.

In total, the menu contains 6 tests, including the main page:

• color range- color spectrum;
• Trailing- motion blur test;
• homogenuity- uniform filling of the screen;
• Pixelmapping- pixel map;
• Text- tests with text

color range

With these tests, you can test the color reproduction of your monitor and see how it can reproduce the smoothness of different shades. The menu provides 9 options for color gradients so you can compare the smoothness of the transition for each of the primary colors. The Black/White section presents a modified test model on the main page.

Trailing

Here is a simple motion blur test. Do not confuse it with game performance tests that measure FPS - Frames per second - the number of frames per second.

To set the object in motion, you need to press the button start box and just look at the train that remains behind the object. The shorter it is, the better the monitor. The same menu contains other tests in which you can move the object with the mouse pointer.

homogenuity

On this screen, we can check the uniformity of the monitor's backlight (on a black background). By switching colors, you can also make sure that the color appears the same on the entire surface of the screen.

Also, this test can help in the detection of the so-called "dead pixels" as they become very clearly visible against a uniform background.

Pixelmapping

On a quality monitor, the screen should be evenly filled with black/white pixels without any colored areas. This suggests that the monitor matrix does not highlight the borders of the color transition. In addition, the test allows you to determine the absence of geometric distortions.

Such a test is often used to test TVs.

Text

They will allow you to evaluate the display of different types and sizes of fonts on different backgrounds.

Monitor test using the program

In addition to the online test, there are a huge number of programs for checking monitors. For the most part, these programs contain the same set of tests. Often the differences are only in the interface.

Such a test program is provided by the testing service described above. You can download it from their website - http://tft.vanity.dk The capabilities and interface of this program fully coincide with the online verification functions described above.

Program features:

• a test of uniformity of the matrix illumination and the absence of “broken dots”;
• color gradient to check the linearity of the matrix;
• circles for checking "non-native" permissions;
• ring gradient to check the linearity and discreteness of the matrix;
• patterns for checking interpolation of "non-native" resolutions;
• checking the readability of fonts;
• mesh to check the legibility of details;
• moving square;
• moving square with scale grid.

This concludes my article and I wish you easy computer work.

P.S. The best rest after hard work is a walk in the fresh air. Do not forget to take breaks, take care of your eyesight and health.

Good day.

The monitor is a very important part of any computer and not only the convenience of work, but also vision depends on the quality of the picture on it. One of the most common problems with monitors is the presence dead pixels.

Dead pixel - this is a point on the screen that does not change its color when the picture changes. That is, it both burns with white (black, red, etc.) color, without transmitting color, and burns. If there are many such points and they are in prominent places, it becomes impossible to work!

There is one nuance: even when buying a new monitor, you can "slip" a monitor with broken pixels. The most annoying thing is that a few dead pixels are allowed by the ISO standard and it is problematic to return such a monitor to the store ...

In this article, I want to talk about several programs that allow you to test the monitor for dead pixels (well, to fence you off from buying a low-quality monitor).

I sMyLcdOK (best dead pixel finder)

Rice. 1. Screenshots from IsMyLcdOK during testing.

In my humble opinion, this is one of the best utilities for finding dead pixels. After launching the utility, it will fill the screen with different colors (as you press the numbers on the keyboard). All you have to do is look at the screen carefully. As a rule, if there are dead pixels on the monitor, you will immediately notice them after 2-3 “fills”. In general, I recommend to use!

Advantages:

1. To start the test: just run the program and press the numbers on the keyboard in turn: 1, 2, 3 ... 9 (and that's it!);
2. Works in all versions of Windows (XP, Vista, 7, 8, 10);
3. The program weighs only 30 KB and does not need to be installed, which means it can fit on any flash drive and run on any Windows computer;
4. Despite the fact that 3-4 fills are enough to check, there are many more in the program.

Dead Pixel Tester (translated: dead pixel tester)

Another very interesting utility that quickly and easily finds dead pixels. The program also does not need to be installed, just download and run. Supports all popular versions of Windows (including 10-ku).

To start the test, it's enough to start the color modes, change pictures, select fill options (in general, everything is done in a small control window, you can close it if it gets in the way). I like auto mode more (just press the "A" key) - and the program will change colors on the screen on its own with a short interval. Thus, in just a minute, you will decide: is it worth buying a monitor ...

Monitor test (online monitor check)

In addition to programs that have already become a kind of standard when checking a monitor, there are also online services for searching and detecting dead pixels. They work on a similar principle, with the only difference being that you (for verification) will need the Internet to access this site.

Which by the way, it’s not always possible to do it - since not all stores where they sell equipment have the Internet (connect a USB flash drive and run the program from it, but in my opinion, it’s faster and more reliable).

As for the test itself, everything is standard here: we change colors and look at the screen. There are a lot of verification options, so with a careful approach, not a single pixel will escape!

By the way, the same site also offers a program for downloading and running directly in Windows.

If after the purchase you find a broken pixel on the monitor (and even worse, if it is in the most visible place), then returning it to the store is very difficult. The bottom line is that if you have less than a certain number of dead pixels (usually 3-5, depending on the manufacturer), then you may be refused to change the monitor (of such cases).

Happy shopping 🙂

The other day I remembered how I bought a monitor in a store a couple of years ago. I then read a bunch of articles on how to choose the right monitor, how to find dead pixels, what color reproduction should be, etc. Most of the authors of the articles advised uploading good juicy photos to your USB flash drive, the Nokia Monitor Test program and go with this “gentleman's set” buying a monitor...

Now, thinking back to all this, I wondered if it was possible to simplify this whole preparation process and go to the store light, but at the same time be sure that you will choose a quality monitor. And I found a way out - an online service. He will provide you with all the necessary monitor tests before the purchase. Now you don’t have to drag anything with you to the store - just ask the seller to type the address of the specified service in the browser, and you will be armed to the teeth)).

I’ll tell you about the possibilities for testing the monitor this online service provides. You can choose from three job options:

• "Html Window" - run tests in a browser tab
• "Html FS" - run tests in a separate browser window with a resolution of 1280 × 1024 px
• "Executable Mode" - you can download tests as a Windows application and run them directly from your computer.

All these options are absolutely equivalent, so choose which one suits you best.

Immediately after starting the test, a page with a picture will open to check the monitor's ability to display close shades. On high-quality monitors, a two percent difference in dark tones can be discerned.

To switch to other modes, you need to move the cursor to the top edge of the browser window. A translucent menu will open, in which other monitor tests will become available:

color range

Evaluation of the quality of color reproduction when displaying smooth gradients of various tones. 9 different modes are available.

Trailing

Test of the real response speed of the matrix. There are 6 test options available.

homogenuity

Checking the uniformity of the backlight of the monitor lamps and checking for dead pixels. You can fill the monitor screen with five different colors.

1:1 pixel mapping

A test for the presence of divorces, the so-called moiré.

Text

Checking the readability and blurring of text on the monitor. You can choose both the color of the text itself and the background on which it is located.

Among other things, Online Monitor Test will be useful to you if you work on several monitors at once. Using the "Input Lag Html (Exe)" test, you can determine if there is a delay between them in the output of the supplied signal.

Friends, I hope you liked this online monitor test. When you are about to go to the store for a purchase, do not forget to use it to choose a good quality copy.

Monitor testing programs have consistently attracted the attention of PC users. Perhaps, among all information and diagnostic utilities, they are the most popular. And all because every user will sooner or later take care of buying a new monitor. Just choosing the manufacturer and model is not enough. According to the rules, when buying a monitor, it is necessary to meticulously test it, especially for broken pixels.

Why do we test the monitor:

Monitor test programs make it easy to test and set up a CRT monitor. Special test images (patterns) make it possible to detect defects such as the lack of convergence of rays for different colors, insufficient focusing and voltage stabilization, geometry distortion, low contrast, uneven luminescence of the phosphor, dead pixels. standards are minimal.

LCD monitors require a different approach. All monitors based on the LCD panel cannot have problems with geometry, convergence, stabilization, focus, etc. And the scatter of parameters, in general, is not typical for them, with the exception of "broken" pixels, which are still found, despite the best efforts of manufacturers. However, LCD monitors should also be tested. Only not different instances, but models from different manufacturers. LCD monitors differ significantly from each other in such parameters as viewing angles, inertia (afterglow and "blurring"), natural color reproduction, color resolution, brightness and contrast, backlight uniformity. These parameters are either not indicated in the characteristics at all, or are measured using completely inconsistent methods.

IsMyLcdOK- universal and portable utility. With the help of it, we will check how many dead pixels are on the liquid crystal tft lcd led monitor. At the first start, a detailed color selection menu will open for us and you will immediately be shown what keys are responsible for..
Nokia Monitor Test version 2.0- a set of tests necessary to test the operation of TFT, CRT monitors. The utility contains the necessary templates for checking geometry, information, resolution, moiré, contrast, brightness, focus, text readability, color reproduction.
TFT Monitor test 1.52- a program with this name was developed by domestic programmers. Unlike existing analogues, it is, firstly, completely free, and secondly, it is equipped with detailed help describing the available templates in Russian and tips on solving typical problems. The program consists of one file (plus an optional help file), does not require installation, in the unpacked state it takes only 650 Kb!
Dead Pixel Tester 3.0- a program for finding the so-called "broken pixels" on your screen. Pretty clear simple interface (though in English).
CheckeMON 1.1- a small utility for testing monitors. Does not require installation and is absolutely free. CheckeMON is implemented as a window with links to various tests: gradients, geometry, color spectrum, etc. There are 11 of them in total, when hovering over each one, a tooltip with a description of the test appears below. And if you know a little English, then it will not be difficult for you to understand what's what.
EIZO Monitortest 1.6- interface in English, Russian is missing, but German and Czech are supported. It has a simple interface and includes twenty-four tests, each of which has a brief description. Tests, for example, are: geometry, brightness clarity, brightness, contrast, moiré, inertness, etc., accompanied by brief tips.
PixPerAn 1.011e- an interesting utility for testing monitors, but, unlike others, it offers to check the operation of the screen when changing images. Using PixPerAn, you can identify flaws that may appear due to the inertness of LCD matrices (for example, when viewing a dynamic image, nasty multi-colored loops may remain on the screen). Includes original tests, for example, in the form of a small computer game, moving hand-drawn typewriters, moving text readability test, etc. Movement speed and color are customizable. Plus, PixPerAn provides information about frame rate per second, dropped frames, CPU usage, and screen settings.

Many mistakenly believe that testing a monitor is something incredibly complicated, comparable to tuning a piano, and only experts can do it. In fact, everything is much simpler, today I will prove it to you using the example of a service. But first, a few words about why this test is needed? The most obvious use is for testing the monitor you are about to purchase (if you have the opportunity) or the monitor you just bought. Actually, this situation happened to me - I had to check the new monitor for dead pixels, and in general to see how it behaves in different situations and tests. The desktop program, apparently, was accidentally deleted, and I didn’t want to waste time downloading and searching for it among a lot of warezniks. Fortunately, I managed to find a monitor testing service online.

In addition, some monitors, especially new ones, may not be calibrated (factory settings are not always optimal). I agree - even a very good monitor can demonstrate the most mediocre result if it is not configured, nevertheless, the set of tests of the Online Monitor Test service in any case will allow you to draw some conclusions about the quality (and qualities) of the tested monitor. Let's go directly to the service. Let's start with the fact that there are 3 test options (modes) available on Online Monitor Test:

• HTMLFS- the monitor test is launched in a separate window 1280x1024 pixels. It is necessary that the Adobe Flash 8+ plug-in be installed in the browser;
• HTML Window- the test is launched in the same browser tab (and not in a separate window). Just like in the previous version, it is required that the Flash 8+ plugin is installed in the browser;
• Executable mode- Windows users can download the test as an application (exe file). In this case, the presence of a flash plugin is not required.

Whichever option you choose, the result will be the same, but for example, I will choose the HTML FS mode.

Main page and Color Range test

After running the test, its main page (Main page) opens:

On it you will see rectangles in grayscale. Hue change step - 1%. This test will allow you to evaluate the monitor's ability to display close tones. A good monitor allows you to distinguish a 2 percent difference in dark tones. On very good monitors, a 2% percentage difference is visible even in the lightest shades.

In fairness, I note that it is more convenient to watch it in the "Color Range" - "Black / White%" mode (if you move the mouse pointer to top of the screen, you will see a menu test, in the same place you can turn off hints):

Since we have reached the Color Range menu, we will continue to study it. In addition to the Black/White % mode, in this menu you will find similar tables of red, green and blue, as well as their gradients. The principle is the same - on a good monitor, differences between shades should be visible. The gradients should be even.

Trailing test

With a group of these tests, you can determine how well the monitor works with moving objects. Turn on the “Main” mode, launch the Start Box and compare the result with the standard from the hint.

Homogeneity Test

Using the Homogenuity mode, you can study the monitor's backlight (its uniformity) and look for "dead pixels". The monitor is definitely worth a look on each of the "substrates" - white, black, red, green and blue.

1:1 pixelmapping test

The test for the so-called moiré (interference vertical lines on the screen) is important for those who are going to use the monitor, including as a TV. If you can easily distinguish between pixels, and there are no “streaks”, everything is OK.

Text test

Thanks to this test, it is possible to reveal the monitor's predisposition to blurring of text with some combinations of text color / background color (for example, text can cast a shadow, as shown in the tooltip):

To test, try a variety of text and background colors.

In addition, there is a useful tool - Input Lag HTML (there is also an exe version), which is useful for those who have several monitors connected to one computer. With this test, you can determine if there is a lag between monitors.

Well, that's all, I hope the online test of your monitor will not upset you. Even if something is wrong, do not rush to panic, maybe it should be properly configured first? Of course, the big advantage of the Online Monitor Test service is its mobility, it makes no sense to store the corresponding programs on all your computers, it is enough to have access to the Internet.

P.S. If you are new to wordpress and do not know where to start, then the course on how to create your own blog consisting of training videos will come in handy.
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Hello! For those who spend a lot of time at the computer, the comfort of work is of particular importance. I won’t “discover America” for anyone if I say that the monitor is one of the most important components of comfortable and productive work. Many users are wondering how to check the monitor for dead pixels, and doing this is as easy as shelling pears.

Today I will tell you how to check the monitor not only for pixels, but also for the uniformity of the backlight and the blurring of the picture.

Before proceeding to the tests, we will make a small digression and get acquainted with the concept color model R G B . RGB is an abbreviation for the English words Red Green Blue. This model is a method of color reproduction, which has found wide application in technology. The method is based on the peculiarities of color perception by the human retina. With this model, all colors reproduced by the monitor are output due to a combination of three primary colors - red, green and blue . That is why all tests for monitors work with these primary colors.

Online monitor test

For online testing, we need to go to the site -http://tft.vanity.dk

Go to the menu HTML window. In the first window in front of us is a scale of shades of gray, which allows you to compare close tones. If your monitor can see dark tones in 2% increments, then it's a good monitor. On the highest quality monitors, you can see the differences between the light tones.
Of course, the evaluation of the monitor does not end on this scale. If you move the mouse pointer to the top edge of the browser window, a menu with various test options opens up in front of us.

If the window with hints on the screen bothers you, you can turn it off by pressing the button "Info on/off" in the upper right corner of the popup menu.

In total, the menu contains 6 tests, including the main page:

• color range- color spectrum;
• Trailing- motion blur test;
• homogenuity- uniform filling of the screen;
• Pixelmapping- pixel map;
• Text- tests with text

color range

With these tests, you can test the color reproduction of your monitor and see how it can reproduce the smoothness of different shades. The menu provides 9 options for color gradients so you can compare the smoothness of the transition for each of the primary colors. The Black/White section presents a modified test model on the main page.

Trailing

Here is a simple motion blur test. Do not confuse it with game performance tests that measure FPS - Frames per second - the number of frames per second.

To set the object in motion, you need to press the button start box and just look at the train that remains behind the object. The shorter it is, the better the monitor. The same menu contains other tests in which you can move the object with the mouse pointer.

homogenuity

On this screen, we can check the uniformity of the monitor's backlight (on a black background). By switching colors, you can also make sure that the color appears the same on the entire surface of the screen.

Also, this test can help in the detection of the so-called "dead pixels" as they become very clearly visible against a uniform background.

Pixelmapping

On a quality monitor, the screen should be evenly filled with black/white pixels without any colored areas. This suggests that the monitor matrix does not highlight the borders of the color transition. In addition, the test allows you to determine the absence of geometric distortions.

Such a test is often used to test TVs.

Text

They will allow you to evaluate the display of different types and sizes of fonts on different backgrounds.

Monitor test using the program

In addition to the online test, there are a huge number of programs for checking monitors. For the most part, these programs contain the same set of tests. Often the differences are only in the interface.

Such a test program is provided by the testing service described above. You can download it from their website - http://tft.vanity.dk The capabilities and interface of this program fully coincide with the online verification functions described above.

Program features:

• a test of uniformity of the matrix illumination and the absence of “broken dots”;
• color gradient to check the linearity of the matrix;
• circles for checking "non-native" permissions;
• ring gradient to check the linearity and discreteness of the matrix;
• patterns for checking interpolation of "non-native" resolutions;
• checking the readability of fonts;
• mesh to check the legibility of details;
• moving square;
• moving square with scale grid.

This concludes my article and I wish you easy computer work.

P.S. The best rest after hard work is a walk in the fresh air. Do not forget to take breaks, take care of your eyesight and health.

Hi all! Today I will show how to test a monitor for dead pixels and malfunctions. It will be useful for you not only to see how your monitor works, but also when buying a monitor, why? Read on!

We need a program for testing, download:

The program does not require installation, open it.

At the top, the program shows information about the monitor.

And at the bottom left, you can specify a specific resolution and frequency.

On the right, tests are already underway.

For example, monitor test number 3, which will show how evenly the monitor works with colors.

In the test, you can control the arrows on the keyboard or mouse.

If you press the key to the right or left, then you can see the uniformity of the color not only horizontally, but also vertically.

Also, make sure that the colors are saturated so that the white matches the white.

To avoid ripples on the monitor.

And the most important thing is that there are no dead pixels. The color should be uniform across the entire screen.

The program also has a test for the readability of letters. Letters must be clear and legible.

It is also useful to look at the last and penultimate tests. Thanks to them, you can see how the monitor will behave in games. There shouldn't be any flicker. And also when increasing the speed on the up key, there should not be large loops. Those. footprints behind the moving square… The smaller the better.

This is how you can see if the monitor is working. Or check your monitor for dead pixels. Or at the time of purchase.

Dead pixels are sometimes found even on new screens, especially on Chinese counterparts. In this article, I will explain what pixels are and why they can fail, how you can identify dead pixels on an LCD screen, and what you can do to try and fix this problem yourself.

What is a pixel

A pixel ("picture element") is the basic unit of programmable color on a computer display or in a computer image. The physical size of a pixel depends on what resolution you have set for the display screen. The specific color that describes a pixel is a mixture of the three components of the color spectrum - RGB. Up to three bytes of data are allocated to specify the color of a pixel, one byte for each primary color component. A true color or 24-bit color system uses all three bytes. However, many color display systems only use one byte (limiting the display to 256 different colors).
The clarity of an image on a screen is sometimes expressed as dpi (dots per inch). (In this usage, a dot means a pixel.) Dots per inch are defined by both physical screen size and resolution.

The reason for the failure of pixels?

If you've never dealt with stuck pixels, you should know that these small screen defects are usually caused by bad transistors or uneven distribution of liquid crystal inside the display. Fortunately, this problem can usually be fixed.

Dark dots are usually caused by dead transistors. Can't be fixed. Pixel ports are the wrong color or otherwise display incorrectly: An incomplete sub-pixel defect from an RGB film layer that is not properly cut cannot be corrected.
Bright Dots: This is caused by an unstable transistor that allows light to pass through all or none of the auxiliary pixels.

dead pixels

Dead pixels on a liquid crystal display (LCD) that do not work properly appear as dark dots, bright dots, and partial sub-pixel defects. In the picture below you can see examples of dead pixels.

How to check the screen for dead pixels

Video for checking for broken pixels

How to remove dead pixels

Important: None of these methods are guaranteed to work, so use them at your own risk.

Two methods to help you get those stuck pixels back on track.

• Program method.

There are several software solutions that will attempt to reactivate stuck pixels. Here are some free ones:

1.UDPixel: A free app that quickly changes all the pixels around the stuck one. Just keep working for a few hours and see if that fixes your issue.
2.JScreenFix: A web application that turns all pixels on and off approximately 60 times per second.

• screen massage method.

First, display a completely black image on the screen. The display must be on for this to work. Use a small pointed object (you can use an ear stick) with a dull rounded end and gently press on the stuck pixel until it starts working again. Usually the time to fix this problem, you will need 10 to 30 minutes. If the pixel stubbornly does not want to work after 30 minutes of massage, you can try a combination of massage with the inclusion of programs for checking dead pixels, described above.

Dead pixel repair video

The monitor is an integral part of a personal computer. It is thanks to this device that the user receives most of the information and has the opportunity to visually observe the actions he performs. Unfortunately, but any technique has the ability to break down. Sometimes a person may initially purchase a defective model. Therefore, it is important to always have tools at hand that allow you to test such equipment in order to be able to assess the condition of the monitor and its individual elements, for example, the matrix.

Indeed, if there is a tester working online, then it is absolutely not necessary to give the monitor for diagnostics to one of the service centers, where an additional payment will be requested for such a service.

An online monitor test can be carried out using special Internet services. The best of them will be discussed in this article.

The best online services to check the monitor screen

There are enough programs on the Web to check the status of the monitor matrix online or to carry out a hertz test. We offer you to get acquainted with the best services of this type:

Online Monitor Test

English version. But it's easy enough to figure it out. Initially, the site offers to familiarize yourself with the method of testing the display. It is possible to launch in a small window (HTML FS), transfer the tool directly to the hard drive (Executable Mode), activate directly in the browser (HTML Window).

It is important to immediately cancel that, no matter which option the user chooses, they will all work according to the same algorithm. As a result, a person receives five tools:

• Checking the quality of color rendering;
• Dead pixel test, known as "Homogenuity";
• The response time of the matrix of the monitor used, the blurring of text information on the screen and the presence of streaks.

Another important functionality present on the site is “Input Lag Html”. It is designed to evaluate the speed of displaying information on additional monitors if the user uses a system of several similar devices.

Monteon

Russian-language Internet service, which is also suitable for examining the condition of the screens of mobile devices.

Works very simply:

• After going to the site, click on "Start";
• A transition to full-screen mode is carried out, where you can select one of the testing options;
• Switching is carried out using a special menu located at the bottom of the screen. There are several modes available for each tool.

What you can run: a test for monitor flicker, its color reproduction, hertz sharpness and contrast. Easily detects dead pixels. There are also several dynamic checks. There is a very useful option for calibrating 16:9 monitors.

Test address https://catlair.ru/?body=TestMonitorWhite

Another very simple and convenient Internet resource with the necessary functionality:

• The screen offers many options for testing;
• It is very convenient that each of them, when turned on, gives a prompt in Russian at the bottom of the screen, allowing you to find out what this or that option is intended for;
• Runs in an internet browser window. You can switch to full screen mode.

As a result, you can: find dead pixels, analyze the uniformity of screen filling, check the display quality for the human eye, color balancing and image “floating”.

http://www.techmind.org/lcd/index.html

Another alternative, made in the English interface. To start testing, you must click on the link "Clock/phasing test screen".

In fact, it repeats all the tools offered by the analogues described above. The main feature of this resource is a large amount of textual information about monitors, which can be very useful. Naturally, you need to have sufficient linguistic knowledge to understand it or use the services of one of the online translators.