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Show HN: Elevators

1668 points · 413 comments · Jrh0203

  1. peterldowns · · focus · HN ↗
    Back in highschool, simulating different elevator algorithms was one of the projects I implemented during my CS class. It wasn't for the class — AP CS did not require anything like actual programming — but it was a fun project.

    A cool connection is that a spinning-disk hard drive (HDD) is actually kind of like one really long elevator, just wrapped around a spindle instead of perfectly vertical. The SCAN algorithm is actually a disk-scheduling algorithm!

    <a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Elevator_algorithm" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Elevator_algorithm

    1. bherms · · focus · HN ↗
      We did this in college as well using microcontrollers and leds or something - i forget the exact details. It was super fun
      1. NKosmatos · · focus · HN ↗
        Did exactly the same with Assembly language on a PIC16C84 microcontroller with LEDs dyeing my university years a looong time ago.
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