Split flap displays! They’re mechanical, clickety-clackity, and largely commercially irrelevant in our screen-obsessed age. That doesn’t mean you can’t have a ball making one of your own, though!
Standing in the Gare du Nord train station in Paris in 2012, Dorrian Porter was transfixed by a sign. The station’s arrivals and departures board—a classic split-flap analog sign that constantly turns ...
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