The acronym UHD stands for Ultra HD which is a resolution of 3840x2160. The acronym HDR stands for High Dynamic Range and this feature expands the color allowing for a more realistic looking image. A smart TV includes applications such as ones found on smart phones. Typically video streaming apps are featured on smart TV's. A standard TV does not have any applications and any video sources must be connected to the TV. The acronym LED stands for Light Emitting Diode. It is a technology that allows electrons to recombine with electron holes and release energy in the form of photons when electricity is applied.
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