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Flip-disc display elements (close up). The disc rotates on the shaft that is carried in the two triangular posts. The magnet that powers the rotation can be seen embedded in the disc. Under the disc is the driving solenoid; when powered, a field is induced into the two posts, flipping the discs. Rotation stops when the disc hits the post.
A Magna Doodle drawing board. Magna Doodle is a magnetic drawing toy, consisting of a drawing board, a magnetic stylus, and a few magnet shapes.Invented in 1974 by Pilot Corporation, [1] over forty million units have been sold to date worldwide, under several brands, product names and variations, including Tyco and Mattel/Fisher Price.
Digital signage on the side of a building reports stock prices. Dow Jones News Ticker, Times Square Digital signage is a segment of electronic signage.Digital displays use technologies such as LCD, LED, OLED, projection and e-paper to display digital images, video, web pages, weather data, restaurant menus, or text.
A display board, also known as poster board, is a board-shaped material that is rigid and strong enough to stand on its own, and generally used paper or other materials affixed to it. Along with quad charts , display boards were an early form of fast communication developed by the National Weather Service of the United States Department of ...
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Dashboard instruments displaying various car and engine conditions. Where the dashboard originally included an array of simple controls (e.g., the steering wheel) and instrumentation to show speed, fuel level and oil pressure, the modern dashboard may accommodate a broad array of gauges, and controls as well as information, climate control and entertainment systems.