Early core plane memories were made by women weavers. Later, IBM developed a machine to make them - much faster to produce and way cheaper.
Pharma Phil
---------- Original Message ----------
From: gregebert <[email protected]>
Date: May 20, 2020 at 6:08 PM
As best I can tell, it looks like a 256x18 array, which probably has 2 bits of parity.
I was told years ago these cores were threaded by hand.
Years ago I played with a PDP-8, that was fully-loaded with 12K words of memory. You could hear the cores squealing when the CPU was not halted.--
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