Browse Prior Art Database

Memory Plane

IP.com Disclosure Number: IPCOM000096021D
Original Publication Date: 1964-Nov-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 71K

Publishing Venue

IBM

Related People

Slonczewski, JC: AUTHOR

Abstract

A magnetic memory plane is provided which avoids the threading of drive and sense wires through preformed apertures. The memory plane in drawing A includes a first plurality of parallel rods or tubes Y1 and Y2 of square-loop magnetic material arranged perpendicular to and in contact with a second plurality of parallel rods or tubes X1 and X2 of square-loop material. Together these form a plurality of storage cells 10, 12, 14, 16, 18 and 20 of the toroidal core type. Insulated drive wires X and Y and an insulated sense wire S pass through each storage cell.

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Memory Plane

A magnetic memory plane is provided which avoids the threading of drive and sense wires through preformed apertures. The memory plane in drawing A includes a first plurality of parallel rods or tubes Y1 and Y2 of square-loop magnetic material arranged perpendicular to and in contact with a second plurality of parallel rods or tubes X1 and X2 of square-loop material. Together these form a plurality of storage cells 10, 12, 14, 16, 18 and 20 of the toroidal core type. Insulated drive wires X and Y and an insulated sense wire S pass through each storage cell.

The plane is assembled by a sequential application of sets of members in only one direction of motion in the following order: (1) rods Y1, (2) drive wires X,
(3) rods Y2, (4) sense wire S, (5) rods X1, (6) drive wires Y, and (7) rods X2. The assembly is then fired to establish magnetic contacts at the points at which the rods Y1, Y2, X1 and X2 intersect. Pressure can be applied to the contacting points during firing to assure magnetic continuity.

Driver wires X and Y and sense wire S can be made of platinum or silver palladium, the rods or tubes Y1, Y2, X1 and X2 can be made of a low sintering temperature ferrite material such as described in U. S. patent 3,123,748, the insulation can be ceramic material and the firing temperature can be approximately 950 degrees centigrade. Bare wires can be substituted for the insulated wires by, e. g., appropriately preforming the wires so as to be supported by...