GRAPHIC DISPLAY SYSTEM FOR PROCESS CONTROL USING A PLURALITY OF DISPLAYS CONNECTED TO A COMMON PROCESSOR AND USING AN FIFO BUFFER

摘要

A graphic display system comprising a plurality of graphic display units which are connected to a host processor through a common bus and providing useful quick response characteristics as a man-machine interface for process control, wherein a common memory of two ports, one of which is connected to the common bus and the other is connected to an internal bus, is provided in each graphic display unit and a part of the common memory is used for transmission of high level command/data with the host processor and comprises a FIFO (i.e. first in first out) buffer.