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raster-scan display

raster-scan display
1. A widely used method of presenting graphical or pictorial images in which the electron beam of a cathode-ray tube is swept across the screen, one row at a time and from top to bottom. As the electron beam sweeps, the beam intensity is turned on and off dependent on information defining the picture to be created. It is similar to the definition of a TV picture. Compare vector display.

2. A physical device operating in this way.

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