Re: [TUHS] core

[Greg 'groggy' Lehey <grog@lemis.com>]

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On Friday, 15 June 2018 at 10:21:44 -0400, Clem Cole wrote:
> On Fri, Jun 15, 2018 at 7:19 AM, A. P. Garcia <a.phillip.garcia@gmail.com>
> wrote:
>
>> jay forrester first described an invention called core memory in a lab
>> notebook 69 years ago today.
>>
> ???Be careful -- Forrester named it and put it into an array and build a
> random access memory with it, but An Wang invented and patented basic
> technology we now call 'core' in 1955  2,708,722
> <https://patents.google.com/patent/US2708722A/en>  (calling it `dynamic
> memory')???.

Tha patent may date from 1955, but by that time it was already in use.
Whirlwind I used it in 1949, and the IBM 704 (1954) used it for main
memory.  There are some interesting photos at
https://en.wikipedia.org/wiki/Magnetic-core_memory.

Greg
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