Abstract: An apparatus for weaving a wire through magnetic cores of a memory matrix include a housing accommodating a shaft connected to a rotation drive and having an axial passage and a cavity in its central portion, the interior of the cavity accommodating a spool of wire rotatable about its own axis and about an axis perpendicular to the shaft. The spool is provided with a step electric motor rigidly affixed on the shaft after the spool. At the side opposite to the arrangement of the step electric motor the housing accommodates a pneumatic transport unit having a central passage to allow the wire therethrough arranged in line with the axial passage of the shaft, walls of a guide having passages for feeding compressed gas to and discharging it from the central passage.