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included service in the governments of political career of John C. Breckinridge Kentucky, the United States, and the Confederate States of America. Breckinridge (January 16, 1821 – May 17, 1875) was inaugurated in 1857 as James Buchanan's vice president, and remains the youngest person to ever hold the office. In 1860 he ran as the presidential candidate of a dissident group of Southern Democrats and won the electoral votes of most of the Southern states, but he finished a distant second among four candidates, losing the election to the Republican candidate, Abraham Lincoln. Most Southern states seceded, but Kentucky stayed in the Union. Previously elected to a U.S. Senate term that began in 1861, Breckenridge fled the state, joined the Confederate States Army, and was expelled from the Senate. Confederate President Jefferson Davis appointed him Secretary of War in February 1865. ( )
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(LED) is a light-emitting diode semiconductor light source that emits light when an electric current flows through it. When a current passes through the diode, which is formed of two different semiconductor materials, electrons are able to recombine with electron holes, releasing energy in the form of photons. This effect is called electroluminescence. The color of the light is determined by the energy required for electrons to cross the band gap of the semiconductor. White light is obtained by using multiple semiconductors or a layer of light-emitting phosphor on the semiconductor device. The earliest practical LEDs, which appeared in 1962, emitted low-intensity infrared and red light. Modern LEDs are available with high output in a range of visible, ultraviolet, and infrared wavelengths.
This picture shows three different views of an 11×44 LED matrix lapel name tag display. The top image is of a little over half of the display, the center image is a close-up of the LEDs in ambient light, and the bottom image is the LEDs in their own red light.
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