PURPOSE: To increase the processing efficiency as the high speed data transfer path, by transferring the data to transfer from the information processor to other information processors, directly to other information processors from the file control unit not via the file unit.

CONSTITUTION: Ahead the data transfer between information processors, the information processor instructs the usage of any of paths (a), (e), (d) and (f) to the file control unit 3', and the control circuit 5 receive the instruction and establishes the data transfer path (a), (e), (d), or (f) in the unit 3'. Thus, in place of the process that after one information processor stores the data transferred to other information processors to the file unit, the data is again picked up, the data is transferred directly to other information processors from the file control unit, allowing to increase the processing efficiency as the high speed data transfer path.