The led was invented by Nick Holonyak who was a professor of Electrical and computer engineering. He has been inducted into the US inventors hall of fame. He invented the led in 1962.He invented the led which is now being used in all equipments and is one of the greatest inventions of all times. Nick Holonyak,s invention the led produces more lumens per watt than both incandescent and halogen lighting. Leds have more lifespan so when nick honoyak invented the led he gave a great technology to the world.