Dekatron

Rarity: Common

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At a glance

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Notion

Domain

Science and technology

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What Wikipedia says

In electronics, a Dekatron (or Decatron, or generically three-phase gas counting tube or glow-transfer counting tube or cold cathode tube) is a gas-filled decade counting tube. Dekatrons were used in computers, calculators, and other counting-related products during the 1950s and 1960s.

Excerpt from the Wikipedia article “Dekatron”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Dieter Waechter, Attribution, via Wikimedia Commons.