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The first classroom uses of large blackboards are difficult to date, but they were used for music education and composition in Europe as far back as the 16th century. [14] The term "blackboard" is attested in English from the mid-18th century; the Oxford English Dictionary provides a citation from 1739, to write "with Chalk on a black-Board". [15]
The chalkboard gag ("I must not write all over the walls") is written all over the classroom walls, clock, door, and floor. [39] After the Simpsons arrive at home, the camera cuts to a shot of them on the couch, then zooms out to show this as a picture hanging on the wall of a fictional overseas Asian animation and merchandise sweatshop .
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An infrared interactive whiteboard is a large interactive display that connects to a computer and projector. The board is typically mounted to a wall or floor stand. Movement of the user's finger, pen, or other pointer over the image projected on the whiteboard is captured by its interference with infrared light at the surface of the whiteboard.
At some universities, lampposts, bollards, trees, and walls often become impromptu posting sites in areas where official boards are sparse in number. Internet forums are a replacement for traditional bulletin boards. Online bulletin boards are sometimes referred to as message boards. The terms bulletin board, message board and even Internet ...
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