FIELD: semiconductor memory devices. SUBSTANCE: device characterized in that it dispenses with local input/output bus for connecting bit bus to main input/output bus to raise its capacity has memory banks, set of bit buses, data input/output buses (signal-carrying buses), column selection buses (signal- carrying buses), power buses, main data input/output bus, read-out transistors, write transistors, and multiplexer. Method for arranging signal-carrying buses in device is given in description of invention. EFFECT: enhanced capacity of device. 3 cl, 13 dwg
