Range Selectable Decoder and Frame Memory Device for Executing Graphic Processes at High Speed Using The Same

Writing a single data for a single address when the (write) the structure of a general memory (RAM), there is an obstacle to speeding up a graphic processing. In addition to the final stage of the LCD panel of the graphical display changes to the organic EL via the TFT from STN As the time to see a trend that a high-speed capability increasing need for a structure memory supporting a high-speed graphics processing of the indispensable. The present invention size selects a plurality of memory cells in the desired range at one time by using the row / column address decoder capable of addressing the desired range by the give off-load the processor each of the two addresses in the limited portable terminal, a data write is possible to provide a frame memory device, which may be made of a high-speed graphic processing.