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[职称英语考试真题] 2012年职称英语理工A级阅读理解练习

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  Inventor of LED

  When Nick Holonyak set out to create a new kind of visible lighting using semiconductor alloyshis colleagues thought he was unrealistic.Todayhis discovery of light-emitting diodesor LEDsare used in everything from DVDs to alarm clocks to airports.Dozens of his students have continued his workdeveloping lighting used in traffic lights and other everyday technology.

  On April 23,2004,Holonyak received the $500,000 Lemelson-MIT Prize at a ceremony in Washington.This marks the 1Oth year that the Lemelson-MIT Program at the Massachusetts Institute of Technology fMIT has given the award to prominent inventors.

  Anytime you get an award.big or little.its always a surprise.Holonyrak said.

  Holonyak,75,was a student of John Bardeenan inventor of the transistorin the early 1950s.After graduate schoolHolonyak worked at Ben Labs.He later went to General Electricwhere he invented a switch now widely used in house dimmer switches.

  LaterHolonyak started 1ooking into how semiconductors could be used to generate 1ight.But while his colleagues were 1ooking at how to generate invisible lighthe wanted to generate visible light.The LEDS he invented in 1962 now last about 10 times longer than incandescent bulbsand are more environmentally friendly and cost effective.

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