Graphic processing apparatus

摘要

Herein disclosed is a graphic processing apparatus which uses a CRT of raster scanning type. The graphic processing apparatus has functions to compare and judge whether or not within the range of a predetermined region thereby to effect the drawing operation, to compare drawing picture element data and other data in the drawing operation thereby to arithmetically control the drawing picture element data in accordance with the compared result, and to drawing a pattern of an arbitrary size on the basis of a fundamental unit of line and design patterns in the drawing operation.