Memory buffer which stores the image definition is known as _____.

CONCEPT: In a raster-scan display system, the picture to be shown on screen is represented as a two-dimensional array of pixel color/intensity values. This complete array — one full screen's worth of picture data — must be held in a dedicated area of memory that the video/display controller repeatedly reads out, pixel by pixel, to refresh the screen at the display's refresh rate.

APPLICATION: The dedicated memory area used specifically to hold this image definition before it is displayed is called the Frame Buffer. The display controller scans through it in raster order (row by row), converting each stored value into the intensity/color of the corresponding screen pixel; any change to the picture is made by writing new values into this same memory area.

Why the other names don't fit:

• Pixel Buffer: “pixel” names a single picture element, not the memory structure that holds an entire screen's worth of picture data — this is not the standard graphics term for that memory.

• Graphic Buffer: “graphic” is a generic word for visual content in general and is not the specific, formally defined name computer-graphics texts use for the display's image-storage memory.

• Picture Buffer: this phrase loosely gestures at storing a picture but is not the recognized technical term used in graphics literature for this memory area.

Hence, the memory buffer that stores the image definition carries the standard, formally recognized name: Frame Buffer.