Patent ID: 6995779

Claim:
A driving device for a display, comprising; a driver for forming a signal with which to drive a display in accordance with display data; a character ROM having bit-mapped character data stored therein and for outputting the character data to the driver in accordance with a specified address; designating means for producing a designating signal by which each of display areas obtained by dividing a display screen of the display is designated as either a character-based display area or a graphic display area; input means for accepting input of graphic data and address data of the character ROM; a first RAM for storing the address data of the character ROM; a second RAM for storing the graphic data; separating means for feeding, in accordance with the designating signal, the address data of the character ROM to the first RAM for the display areas designated as character-based display areas and the graphic data to the second RAM for the display areas designated as graphic display areas; and a selector for feeding either the bit-mapped character data from the character ROM or the graphic data from the second RAM to each of the display areas in accordance with whether the display area is designated as a character-based display area or a graphic display area.