| 摘要 |
The display includes a frame within which a belt may rotate. The belt carries a selection of pictures - e.g. fruit and has a series of perforations along the edge in order to be driven around. The belt is supported between wheels at the base of the frame, and a further pair of wheels supported at right angles to a shaft. This shaft is urged out in the direction to tension the belt by a coil spring. - A motor mounted in the base of the frame acts via toothed wheels to rotate the belt, and change the display. Photoelectric cells on the back panel are arranged to detect the image which is being presented by the device.(0/7)
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