The flip-disc display (or flip-dot display) is an electromechanical dot matrix display technology used for large outdoor signs, normally those that will be exposed to direct sunlight. Flip-disc technology has been used on buses across North America and Europe. It has also been used extensively on public information displays. A few game shows have also used flip-disc displays, most notably Family Feud from 1976-1995. (Eggcrate displays were used from 1999-2006, and LCD screens since 2002.)
Read more about Flip-disc Display: Design, History, Alternative Technologies, Application
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“We rarely quote nowadays to appeal to authority ... though we quote sometimes to display our sapience and erudition. Some authors we quote against. Some we quote not at all, offering them our scrupulous avoidance, and so make them part of our “white mythology.” Other authors we constantly invoke, chanting their names in cerebral rituals of propitiation or ancestor worship.”
—Ihab Hassan (b. 1925)