Mondo Knows Facts
The point-contact transistor was invented at Bell Labs in 1947
John Bardeen, Walter Brattain, and William Shockley created the semiconductor switch that revolutionized electronics
In December 1947, physicists at Bell Telephone Laboratories constructed the first working transistor using germanium crystals. The device could amplify electrical signals and replace bulky vacuum tubes in electronic circuits. This breakthrough enabled the miniaturisation of radios, computers, and digital devices across the world.
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Tags: electronics, transistor, semiconductor
The point-contact transistor was invented at Bell Labs in 1947: the short answers
- Where does this come from, and can I check it?
- John Bardeen, Walter Brattain, and William Shockley created the semiconductor switch that revolutionized electronics. The figure is taken from IEEE History Center, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.
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- Yes. It sits on the Technology shelf, one of 1,090 sourced facts grouped into space, animals, the human body, history, science and more. Category pages collect every fact in the same field.
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