Explain the utility and purpose of display processor in the graphic system. The purpose of the display processor is to free the CPU from the graphics chores. A major task of the display processor is digitizing a picture definition given in an application program into a set of pixel intensity values for storage in the frame buffer. The digitization process is called scan conversion. Display processor also perform a number of additional operations, such as generating various line styles (dashed, dotted, or solid), displaying color areas, and performing certain transformations and manipulations on displayed objects. Also, display processors are typically designed to interface with interactive input devices, such as a mouse.