Displays, often called monitors or

Displays, often called monitors or screens, are the most-used output device on a computer. They provide instant feedback by showing you text and graphic images as you work or play.
Most desktop displays use Liquid Crystal Display (LCD) or Cathode Ray Tube (CRT) technology, while nearly all portable computing devices, such as laptops, incorporate LCDs. Because of their slimmer design and lower energy consumption, LCD monitors (also called flat panel or flat screen displays) are replacing CRTs.
Basic features
Resolution refers to the number of dots of colour, known as pixels (picture elements), contained in a display. It is expressed by identifying the number of pixels on the horizontal and vertical exes. A typical resolution is 1024x768.
Two measurements describe the size of your display: the aspect ratio and the screen size. Historically, computer displays, like most televisions, have had an aspect ratio of 4:3 – the width of the screen to the height is four to three. For widescreen LCD displays, the aspect ratio is 16:9, very useful for viewing DVD movies, playing games and displaying multiple windows side by side, High-definition TV also uses this format. The viewable screen size is measured diagonally, so a 19” screen measures 19” from the top left to the bottom right.
Inside the computer there is a video adapter, or graphics card, which processes images and sends signals to the monitor. CRT monitors use a VGA (video graphics adapter) cable, which converts digital signals into analogue signals. LCD monitors use a DVI (digital video interface) connection.
Colour depth refers to the number of colours a monitor can display. This depends on the number of bits used to describe the colour of a single pixel. For example, an old VGA monitor with an 8-bit depth can generate 256 colours and a Super VGA with a 25-bit depth can generate 16.7 million colours. Monitors with a 32-bit depth are used in digital video, animation and video games to get certain effects.
Display technologies
An LCD is made of two glass plates with a liquid crystal material between them. The crystals block the light in different quantities to create the image. Active-matrix LCDs use TFT (thin film transistor) technology, in which each pixel has its own switch. The amount of light the LCD monitor productes is called brightness or luminance, measured in cd/m2 (candela per square metre).
A CRT monitor is similar to a traditional TV set. It contains millions of tiny red, green and blue phosphor dots that glow when struck by an electron beam that travels across the screen and create a visible image.
PCs can be connected to video projectors, which project the image onto a large screen. They are used for presentations and home theatre applications.
In a plasma screen, images are created by a plasma discharge which contains noble (non-harmful) gases. Plasma TVs allow for larger screens and wide viewing angles, making them ideal for movies.
Organic Light-Emitting Diodes (OLEDs) are thin-film LED displays that don’t require a backlight to function. The material emits light when stimulated by an electrical current, which is known as electroluminescence. They consume less energy, produce brighter colours and are flexible – i.e. they can he bent and rolled up when they’re not being used.

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Displays, often called monitors or screens, are the most-used output device on a computer. They provide instant feedback by showing you text and graphic images as you work or play. Most desktop displays use Liquid Crystal Display (LCD) or Cathode Ray Tube (CRT) technology, while nearly all portable computing devices, such as laptops, incorporate LCDs. Because of their slimmer design and lower energy consumption, LCD monitors (also called flat panel or flat screen displays) are replacing CRTs. Basic features Resolution refers to the number of dots of colour, known as pixels (picture elements), contained in a display. It is expressed by identifying the number of pixels on the horizontal and vertical exes. A typical resolution is 1024x768. Two measurements describe the size of your display: the aspect ratio and the screen size. Historically, computer displays, like most televisions, have had an aspect ratio of 4:3 – the width of the screen to the height is four to three. For widescreen LCD displays, the aspect ratio is 16:9, very useful for viewing DVD movies, playing games and displaying multiple windows side by side, High-definition TV also uses this format. The viewable screen size is measured diagonally, so a 19” screen measures 19” from the top left to the bottom right. Внутри компьютера есть видео адаптер, или графической карты, которая обрабатывает изображения и посылает сигналы на монитор. Мониторы ЭЛТ использовать кабель VGA (видео графический адаптер), который преобразует цифровой сигнал в аналоговый сигнал. ЖК-мониторы используют подключение DVI (цифровым видео интерфейсом). Глубина цвета относится к количеству цветов монитора. Это зависит на количество битов, используемых для описания цвет одного пикселя. К примеру старый монитор VGA с 8-разрядной глубиной может генерировать 256 цветов и Super VGA с глубиной 25-разрядный может генерировать 16,7 миллионов цветов. Мониторы с 32-разрядной глубиной используются в цифровых видео, анимации и видео игры получить некоторые эффекты. Отображения технологий ЖК состоит из двух пластин стекла с жидкокристаллическим материала между ними. Кристаллы блокировать свет в разных количествах для создания образа. Активной матрицей LCDs использовать технологию TFT (тонкопленочных транзисторов), в котором каждый пиксел имеет свой собственный переключатель. Количество света, LCD монитор продукции называется яркость или освещенность, измеренная в кд/м2 (кандела на квадратный метр). ЭЛТ-монитор похож на традиционный телевизор. Он содержит миллионы крошечных красный, зеленый и Синий люминофор точек, которые светятся при поражен электронного луча, который перемещается по экрану и создать видимое изображение. ПК может быть подключен к видео проекторы, которые проецировать изображение на большом экране. Они используются для домашнего кинотеатра приложений и презентаций. In a plasma screen, images are created by a plasma discharge which contains noble (non-harmful) gases. Plasma TVs allow for larger screens and wide viewing angles, making them ideal for movies. Organic Light-Emitting Diodes (OLEDs) are thin-film LED displays that don’t require a backlight to function. The material emits light when stimulated by an electrical current, which is known as electroluminescence. They consume less energy, produce brighter colours and are flexible – i.e. they can he bent and rolled up when they’re not being used.