A light emitting diode (LED) is a semiconductor light source. LEDs are used as indicator lamps in many devices and are increasingly used for other lighting. LEDs were first used as replacements for incandescent and neon indicator lamps. First used in expensive laboratory and electronic test equipments, but as time passed, they are used in appliances as TV, radios, calculators and even watches.
As LEDs been a commercial success, more people are now turning to LED display. It is a flat panel display, which uses light-emitting diodes as a video display. They are used outdoors in store signs and billboards and as indoor lighting. We can now see LED displays on public transport vehicles, stores and even stadiums. 56
Before the popular success of LED, we had electronic display. It is an electronic component used to convert electrical signals into visual imagery in real time suitable for direct interpretation by a human operator. It serves as the virtual port between a human and machine. The major electronic display application is in home color television. However, the electronic display industry declined in 1990s due to manufacturing advances in liquid-crystal displays (LCDs).
Although, it has high initial price, LED has a lot of advantages. It is safe to use under normal conditions. It also boast its cool light, meaning it emits very little heat.32 It has relatively long useful life. Nowadays, many establishments are using LED signsdue to the low energy consumption and their low maintenance. LED signs can be found almost anywhere. From stores, to vehicles, traffic lights and exit signs in big buildings.
Aside from signs, LEDs are used for lighting. They are used in street lights and architectural lighting. Due to LEDs long lifetime, it is being used in automotive lighting on cars, motorcycles, and bicycle lights. They are used in aviation lighting, too. They are also suitable for backlighting for LCD televisions and laptop displays. Aside from that, they are used in aquarium lights. Since LEDs are small and need little power, they are also used in hand held devices such as flashlights. They are now used commonly in all market areas from commercial to home use: standard lighting, AV, stage, theatrical, architectural, and public installations, and wherever artificial light is used.
LEDs are being used all over the world. From the biggest to the smallest sign or lighting system, we can guarantee that LEDs will be efficient and long-lasting. It is safe for us and the environment as well. Although, like other products there are disadvantages as well, but it can save your money because it is economically sustainable.
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Uses of LED