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| | raster - a Whatis.com definition |
 | | In a CRT, the raster is a sequence of horizontal lines that are scanned rapidly with an electron beam from left to right and top to bottom, in much the same way as a TV picture tube is scanned. |
 | | But if low resolution is used (for example, 640x480 pixels on an LCD intended for 800x600), the displayed image may fill only part of the screen. |
 | | If high resolution is used (such as 1024x768 pixels on an LCD intended for 800x600), the displayed image may exceed the area of the screen, and scrolling will be necessary to view all portions of the raster. |
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