USSR Soviet RAM 3D.2.M Magnetic Ferrite Core Memory Plate 128 byte 1970s WORKING

Description

SKU:
28.3
USSR Soviet RAM 3D.2.M Magnetic Ferrite
Core Memory Plate 128 byte 1970s Working
3D.2.M Ferrite Core Memory Plate.
The memory was made at the Kursk plant "Scotchmash
"
in the 70s of the
last century..
The memory frame bears the USSR
"
quality mark
"
. See the photo.
The Plate outside dimension: 12 x 12 cm (about 4.7 x 4.7 inch)
The frame size: 10 x 10 cm (about 3.9 x 3.9 inch)
The matrix size: 6.5 x 6.5 cm (about 2.56 x 2.56 inch)
Weight: 30 g (about 1 oz)
Capacity: 1 ferrite toroid = 1 bit
A 32 x 32 core memory plate stores 1024 bit (128 byte) of data
Outer core diameter: 1.4 mm
The plate is one of 20 plates forming a ferrite core memory block. The
capacity of the whole block is 2560 byte (2 Kb).
Condition:
Excellent, close to perfect, fully working, vintage, collectors condition. No broken wires. No broken rings. No missing rings.
Please, check pictures provided at eBay picture gallery for complete details.
Offered storage core plate is an example of magnetic-core storage —
devices consisting of an array of magnetic cores.
Up to the beginning of 1970th in the USSR ferrite core memory plates have
been woven manually. That painstaking work requiring much rapt attention
and perseverance was entrusted to young women with sharp eyesight.