| 摘要 |
Each of a plurality of segment drivers for driving a liquid crystal display panel used in an electronic device includes a display data memory corresponding to a display image plane. The display memory is supplied with an X address and Y address from an address register so that the data write area thereof can be specified. A control device of the electronic device outputs address data and display data to a connection bus when data is stored into the display memory, and the segment driver writes transfer data into an addressed area when it is determined that the write-in process is effected for the segment driver itself by decoding address data by use of a decoder. When data stored in the display memory is displayed, the Y address is automatically incremented in synchronism with a common signal by an increment circuit, and data of one line specified by the Y address is simultaneously read out from an output port of the display memory, converted into a segment signal via a latch circuit and output.
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