What was the first semiconductor device?

The crystal detector.

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  1. The crystal detector ✔
  2. The light bulb
  3. The battery

Why: Karl Ferdinand Braun developed the crystal detector, the first semiconductor device, in 1874.

Huh, didn't know that: Karl Ferdinand Braun developed the crystal detector, the first semiconductor device, in 1874.

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References

Answer: The crystal detector. Karl Ferdinand Braun developed the crystal detector, the first semiconductor device, in 1874.

  1. Electronics en.wikipedia.org/wiki/Electronics
    Karl Ferdinand Braun's development of the crystal detector, the first semiconductor device, in 1874
    Checked 2026-11-07.

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