Abstract A method for producing a memory matrix having a number of magnetic parallel lines and with magnetic flux keepers and a number of magnetic parallel memory lines each comprising a conductive line and two series-coupled ferromagnetic films deposited on the conductive line so as to form a closed-magnetic circuit around the conductive line. One of the two ferromagnetic films is deposited on the conductive line adhered on a flexible, insulative sheet by a solventproof adhesive so as to produce magnetic parallel lines. The magnetic parallel lines are transferred to the surface of a substratum on the surface of which is a strong adhesive stronger than the solventproof adhesive. The other of the two ferromagnetic films is deposited on the conductive liens of the magnetic parallel lines so as to produce magnetic parallel memory lines. A product of the second step is associated with a product of the third step so that parallel lines of two groups are insulated and intersect each other substantially at 90*.
A method for producing a memory matrix comprising: a first step of bonding a conductive film on a flexible, insulative sheet by use of a solventproof adhesive; a second step of dividing the conductive film into parallel small lines at regular spaces; a third step of electrically plating a first ferromagnetic film on each of the parallel small lines to partially coat the periphery of said lines on the flexible, insulative sheet; a fourth step of transferring the partially coated lines to the surface of a substratum on the surface of which an adhesive stronger than the solventproof adhesive is applied such that the uncoated portions of said conductive lines are exposed; a fifth step of depositing a second ferromagnetic film on said uncoated portions of said lines so as to produce a ferromagnetic film about the entire periphery of said parallel lines by the first and second ferromagnetic films; and a sixth step of associating a product of the fourth step with a product of the fifth step so that the parallel lines of the two products are insulated and intersect each other at substantially 90* .