Memory - IBM, Magnetic Core, 1955-1975 Object Reg. No: ST 43748

IBM magnetic core memory comprising 3 dimensional network of wires with magnetic beads at each intersection, together with a plug-in module, 1950s-1960s.
Module with six frames, each containing a number of tiny magnetic toroids (rings), the cores, through which wires are threaded to write and read information. The top is protected by a perspex sheet and the base of the module is attached to a metal plate. A set of seven cord connectors is attached to the frames.

Plug in module containing mechanical and electromechanical components. Some of the components have identifying markings.
Statement Of Significance:
Magnetic core memory was the electro-physical mainstay of computers in the early computer era. They had to be hand-assembled.
Acquisition Information:
Donation from IBM Australia Pty Ltd, 1996
Discipline: Technology
Dimensions: 110 mm (Height), 230 mm (Width), 234 mm (Length)
Dimension Comment: Dimensions of magnetic core.

More information

Tagged with: computing
Themes this item is part of: Information & Communication Collection
Primary Classification: COMPUTING & CALCULATING
Secondary Classification: Digital Computing
Tertiary Classification: internal memory
Inscriptions: Top of module with magnetic core: 002 / AC
Plug in module: (text)
Manufacturer: International Business Machines (IBM), United States of America, 1950-1969

Manufacturer & Designer.

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