Preliminary core memory technology page.

Oh no, not another computer museum!

Detail from a core memory board. Originally from a CompuData bookkeeping machine.
Not this CompuData, nor this CompuData, nor this CompuData, nor this CompuData, nor this CompuData, nor this CompuData, nor this CompuData, nor this CompuData, nor this CompuData, nor this CompuData, nor this CompuData, nor ...

The board from which the picture above is a detail, has four linked mats of 20 x 53 cores (=bits). So this leads to a grand total of 4240 bits.


The whole board.

This board has four wires through each core. Per mat there are two black wires. These are probably the sense/inhibit wires. But from this info, and from the links below, I cannot determine how many bits can be addressed simultaneously per mat/board. Probably more than one, which is the limit on basic three wire mats.

R. Tim Coslet solved the problem for me:

It looks to me like a 4 bit wide memory, with probably 1040 addresses.

Each of the 4 "planes" is 20 by ~52.

There are 4 wires through each plane, probably "x", "y", "inhibit", and "sense".

So this board is more than one 'kilo-nibble', half a kilo-byte.

Generic links:

Last updated: 2011-05-13

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