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Bell Laboratories Demonstrates the Transistor

Bell Laboratories demonstrated the point-contact transistor to colleagues on December 23, 1947.

Published · Updated · 1 min read

The Event

Bell Laboratories demonstrated the point-contact transistor to colleagues on December 23, 1947. John Bardeen and Walter Brattain had developed the experimental device.

The Wider Story

The small semiconductor arrangement could amplify electrical signals. Its significance became clearer through further development and manufacturing changes.

Putting the Event in Perspective

This demonstration was not a modern microprocessor launch.

Reading the Historical Record

A recreation should show a laboratory prototype rather than an integrated circuit or a finished consumer radio.

About the Historical Recreation

The accompanying visual is an illustrative reconstruction: a 1947 electronics bench with an illustrative point-contact transistor prototype and analog instruments. It is not authentic archival footage, an eyewitness record or additional evidence for the event.

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