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Transistors are tiny electronic components that act as switches and amplifiers, and they dwell at the heart of modern technology. In simple terms, a transistor can turn a flow of electricity on or off ...

On Dec. 16, 1947, the future began with the invention of the transistor. A lab notebook indicates that researchers at Bell Telephone Laboratories first got the thing to work on this day 75 years ago.

We’re surrounded by transistors. They’re all around us. They’re in phones, car keys, microwaves, pacemakers and plenty more. The transistor is a revolutionary piece of technology that helped create ...