Compare the records of tests of monitor from 21 to 30 inches,

Which monitor to choose? You can either see all of our trials in this comparison, compare yourself displays in face-to-face monitors, or you simply go straight to the point, in our selection of the best instructors time.

22 to 28 inches, there are several kinds. The most advanced offer wide viewing angles, foot smart (height adjustable, pivot ...), multiple video inputs, and even a digital tuner (the monitor is then used as extra television). Next definition, among those still 1680 x 1050 pixels and a majority in 1920 x 1080 pixels, it's your choice: more pixels to display more information on the screen, or less to gain visibility?

In contrast, the first screen prices are not necessarily bad, but there are more basic. The feet are fixed, there is often only a VGA input (even if the DVI still tends to spread, even on the first price) and the tiles are of the TN 5 ms. In practice this means that the image turns black when seen from below, and that the games will be subject to a slight persistence (moving objects are blurred).

The screen is almost perfect:

1. Highly reactive (less than 1 color afterimage on average) and promptly display excessive.

2. True color default (<3). 3. High contrast (contrast> 800:1 and 200 cd / m² Black = <0.25 cd / m²). 4. With open viewing angles, which provide good color consistency. 5. With a high level of ergonomics, especially an intelligent walking on rotating base, adjustable height ... Realistically, this screen is not perfect, or it is overpriced. However, to screen claims that the famous five star, it will be at a maximum of five key criteria is missing. If it lacks two, it will be up to 4 stars - except to make up with very interesting options. 20, 22 or 24 inches?

19 to 20 inches do not much appeal against the 22'': their prices are too close. Now, the concern would rather above the price of 24 inches is in free fall. So much so that models of this diagonal are the cheapest price 22-inch mid-range. Of the 24'', we gain a little ease of use, but is lost in space.

One last point: the new generation relies on original functions to stand out. There are monitors with TV tuner, while others can display games in relief (with special glasses), and even - finally - the screens that can display 120 frames per second instead of 60, to completely forget the persistence and improve the flow of the sequences.

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Compare flat screens: LCD screens from 22 to 30 inches

Which monitor to choose? You can either see all of our trials in this comparison, compare yourself displays in face-to-face monitors, or you simply go straight to the point, in our selection of the best instructors time.

The display market has further evolved. The 22-inch LCD is becoming a standard entry level, those who want quality, innovation, true comfort, will have to turn to screens 23 inches or more. You win with them viewing angles more open interfaces of many and varied - the HDMI comes to a growing number of monitors, the YUV expensive consoles is less rare - finishes and designs more treatment. Technology enthusiasts will be thrilled: the efforts of manufacturers are now concentrating on these major diagonals. It was predictable with the advent of HD, a growing number of users looking for a multi-purpose screen, good at the office, but the picture for movies - HD necessarily.

Battle sound technology with new consumer to the key benefits:

Whether you opt for a screen 22, 23, 24, 26, 27 or 28-inch resolution is almost always the same: 1920 x 1080 pixels (a few 1920 x 1200 pixels resist). It's built for HD movies. No resizing is required. Only requirement: a little step back. Manufacturers still do not have the image correction circuits available in televisions. Result: it teems a bit. The 30-inch display 2560 x 1600 pixels each. It is a dream to work ... if your office supports it.

Less than 300 euros, you will be surprised to find both 24, as 26 inches, the latter sometimes being more aggressive price than the former. But they are often less reactive. The selection criteria: make sure they offer a really high contrast level, and they have many video inputs you need. All are not necessarily HDMI + DVI + VGA ...

Above 300 euros, you will find screens VA and IPS panels (PVA in most cases). Their big advantage is their viewing angles are homogeneous, when those of LCDs Economic TN turn black when viewed from below. The result is a visual color uniformity disturbed when the VA and IPS displays is perfect.

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Posted in: LCD,monitor,screen

The monitor or computer screen

Introduction to computer screens:

We call screen (or monitor) display device of the computer. There are usually two families of monitors:

* The CRT (CRT noted for Cathode Ray Tube), powering the majority of desktop computers. These monitors large and heavy, with a high power consumption.

* Flat screens fitted to all laptops, personal digital assistants (PDAs), digital cameras, as well as more and more desktops. These screens are compact in depth (hence the name), lightweight and with low power consumption.

Specifications:

Monitors are often characterized by the following:

* Definition: the number of dots (pixels) screen that can display this number of points is generally between 640x480 (640 points in length, 480 pixels wide) and 2048x1536, but higher resolutions are technically possible. The table below provides the definitions recommended by the size of the diagonal:

diagonal definition

15 " 800x600

17 " 1024x768

19 " 1280x1024

21 " 1600x1200

* Size: It is calculated by measuring the diagonal of the screen and is expressed in inches (one inch equals 2.54 cm). Care must be taken not to confuse the definition of the screen and size. Indeed a screen of a given size can display different definitions, however in general the large screens have a better definition. Standard sizes of the screens are the following (partial list):

o 14 inches, a diagonal of 36 cm;

o 15 inches, a diagonal of 38 cm;

o 17 inches, a diagonal of 43 cm;

o 19 inches, a diagonal of 48 cm;

o 21 inches. a diagonal of 53 cm;

* The dot pitch (dot pitch in English): This is the distance between two phosphors, the more it is little more the image is accurate. And a dot pitch less than or equal to 0.25 mm will provide a good user experience, while the screens having no mask at or above 0.28 mm are avoided.

* Resolution: This determines the number of pixels per unit area (pixels per linear inch (English DPI: Dots Per Inch, translate dots per inch). A resolution of 300 dpi means 300 columns and 300 rows of pixels in an inch square which would then 90,000 pixels on a square inch. The reference resolution of 72 dpi gives us a pixel 1 "/ 72 (one inch divided by 72) is 0.353mm, corresponding to a pica (a typographical unit Anglo-Saxon ).

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Posted in: computer,monitor,screen