In 1945, electronics ran on vacuum tubes. These glass bulbs controlled electrical signals, but they were fragile, power-hungry, and burned out constantly. The ENIAC computer, with its 18,000 tubes, needed a massive cooling system just to function. At Bell Labs in New Jersey, executive Mervin Kelly had seen enough. He wanted to replace the unreliable mechanical switches in the nation’s telephone system with something solid and durable. To solve the problem, he established a new solid-state physics group and chose a brilliant but difficult physicist to lead it: William Shockley. His mission was to find a replacement for the vacuum tube, a task that had stumped researchers for years. The search for a solid-state amplifier was on.
The Transistor
The invention of the transistor at Bell Labs in 1947, a tiny switch with no moving parts that replaced the vacuum tube and created the modern world.
Chapter 1
The Tyranny of the Tube
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Frequently Asked Questions
What did the transistor replace?
The transistor replaced the vacuum tube. Vacuum tubes were large, fragile glass components that controlled electricity like a light bulb, but they consumed a lot of power, generated immense heat, and burned out frequently, making early electronics unreliable.
Who invented the transistor?
The first working transistor was created in 1947 by physicists John Bardeen and Walter Brattain at Bell Labs. Their group leader, William Shockley, later designed a more practical version and all three shared the 1956 Nobel Prize for the invention.
What is an integrated circuit?
An integrated circuit, or microchip, is a device that combines thousands or even billions of transistors and other electronic components onto a single, tiny piece of semiconductor material like silicon. This solved the problem of manually wiring individual components together.
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