Which chemical element was used to build the very first working transistor in 1947?
Chapter 1

The spark at Bell Labs

Chapter 2

The traitorous eight and silicon's debut

Chapter 3

Printing with light on a microscopic scale

Chapter 4

The global chip highway

YOUR GOAL

Master of From transistor to microchip

Ch 1 · The spark at Bell Labs
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steve The spark at Bell Labs

Tiny switch, Bell Labs made it, Sparked the silicon age, can you believe it?

Jul 9

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steve Why germanium lost to silicon

Jun 18

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Why germanium lost to silicon

steve Early transistors used germanium, but silicon proved far superior for handling high heat and abundance.

Jun 17

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The Christmas miracle of 1947

steve Three physicists at Bell Labs invented the point-contact transistor, changing electronics forever.

Jun 17

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Bell's Little Spark
BETA

steve Assemble transistors on silicon to learn how microchips are created.

Jun 18

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Fun Fact

First silicon transistor: In 1954, Texas Instruments revealed the first commercial silicon transistor by dropping a working one into a beaker of hot oil to prove its heat resistance.

Jun 17

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Glossary
transistor (noun)
A semiconductor device used to amplify or switch electrical signals and power. John Bardeen, Walter Brattain, and William Shockley invented the device at Bell Laboratories in December 1947.

Jun 17

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Gossip

Which tech era would you visit?

Jun 17

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Quiz

In what year did Bell Labs scientists successfully demonstrate the first working transistor?

Jun 17

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steve The bulky world before silicon

Jun 18

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Quiz

What process describes adding tiny impurities to silicon to change its electrical conductivity?

Jun 17

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steve How a semiconductor actually works

Jun 18

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Quiz

Which three scientists shared the 1956 Nobel Prize in Physics for inventing the transistor?

Jun 17

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steve The Christmas miracle of 1947

Jun 18

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Quiz

What was the name of the massive 1946 computer that used 18,000 vacuum tubes?

Jun 17

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Quiz

Why did silicon eventually replace germanium as the preferred semiconductor material?

Jun 17

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Quiz

Which fragile component did the transistor replace in early computers?

Jun 17

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Quiz

What common natural resource is the primary source of the silicon used in microchips?

Jun 17

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Quiz

Which chemical element was used to build the very first working transistor in 1947?

Jun 17