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The iBook has a built-in color flat panel display that is 12.1 inches in size, measured diagonally. The display contains 800 by 600 pixels and can show up to millions of colors. The display is backlit by a cold cathode fluorescent lamp (CCFL). The display uses TFT (thin-film transistor) technology for high contrast and fast response.
The ATI Rage Mobility graphics controller IC includes 4 MB of VRAM, which supports 3D acceleration and display depths up to 24 bits per pixel. When more graphics storage is needed, the graphics IC can also use part of main memory. For more information, see Graphics IC.
The graphics controller IC includes a scaling function that expands smaller-sized images to fill the screen. By means of the scaling function, the iBook can show images at either 800 by 600 or 640 by 480 pixels.