Rabu, 30 Januari 2013

Essay Writing


Exposition Writing
By : Karolina Nurainia



The Superiority of LED Television
            Television is a sophisticated tool in this period. Almost all of the people in the world have it in their home. Nowadays, television has high quality and one of the qualities is television with LED. LED television is a new incarnation of the LCD set. It is an LCD television that has backlit with LEDs or light-emitting diodes instead of standard cold-cathode fluorescent lights or CCFLs. LED televisions are extremely thin and exhibit better picture quality than standard LCD television and use energy efficiently. It has many superiorities that can be enjoyed by many people. The superiorities of LED television are located in the 3D picture system and its lifespan. These are two points that can be discussed in this essay.
            Firstly, LED has a 3D picture system. To watch in 3D, watchers need a pair of 3D glasses and some 3D content. 3D picture system is a system that support a television to produce a picture becomes real, so the watchers can enjoy the real picture that is produced by LED television satisfiedly. Then, it has high picture’s quality brightness because it is made with a superior diode backlighting system that emits tremendously bright lights. LED has dynamic backlights which adjust their intensity according to the content on the screen. For instance, if there is a dark image on the screen, the television will automatically dim the backlight. This should make the image look darker and avoid the washed out appearance that might otherwise occur. A side effect of the contrast controlling capabilities of LED television is that images on screen keep closer to the corrrect colour balance at all times. It means that the picture that are going to appear as realistically bright as possible. Then, LED television is often called ‘Smart TV’. It can catch all term for TVs with internet features, also known as ‘internet TVs’ or ‘connected TVs’. This television can be connected to the internet without another equipments and if it has connected to the internet, the watchers can find new world by attendance the various of favourite television, superior movies, games, and the others.  LED television becomes a favourite television in the wide societies because these superiorities.
Secondly, LED television uses 50% or less electrical power, and it is thinner and long lasting. LED television has lifespan because optimal viewing conditions can be seen till about 100.000 hours of use on an average. This lifespan depends on highly on the level of contrast that the TV set play. A higher contrast setting leads to a shorter life since the LED lamps have to work harder to produce the same colors, and this contrast setting will highly depend on the external light in the room where the TV is viewed. LED televisions are equipped with optimum light technology and provide an undiminished viewing experience, even as bulb color begins to fade. LED lifespan can vary according to environmental and design related items. LED lifespan is ultimately determined during the engineering phases of a specific custom LED lighting design. In some cases, design engineers may intentionally limit LED lifespan in lighting applications where longevity is non-critical. One case includes an application is designed to operate only for a specified period. Overdriving an LED lights will increase the luminous output, but dramatically decrease lifespan if thermal management is not considered.
 Therefore, LED television is a kind of LCD television that uses light emitting diodes instead of the standard fluorescent backlight to illuminate the screen. LED televisions are extremely thin and exhibit better picture quality than standard LCD television and use energy efficient. Among the soperiorities of the LED television are located on its 3D picture system and its lifespan. Then LED television has best lifespan. It can be seen when the watchers enjoy a television and the optimal viewing conditions till about 100.000 hours of use on an average.  Not only that but also LED television is supported by another superiorities such as high picture brightness, dynamic backlights, and special internet TVs, so it interests everybody to have it and becomes something longed for everyone with the 3D picture system and its lifespan.

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