And the programming semaphore comes from the semaphore used as train signal to e... | Hacker News

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		shakow on April 12, 2023 \| parent \| context \| favorite \| on: Semaphore: A Full-Body Keyboard And the programming semaphore comes from the semaphore used as train signal to ensure that two trains are not using the same track segment simultaneously.

surfsvammel on April 12, 2023 [–]

Semaphores are also used on shooting ranges.

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