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From: mitchalsup@aol.com (MitchAlsup1)
Newsgroups: comp.arch
Subject: Re: In-Memory Computing
Date: Mon, 18 Nov 2024 21:21:11 +0000
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On Mon, 18 Nov 2024 18:50:46 +0000, Thomas Koenig wrote:

> MitchAlsup1 <mitchalsup@aol.com> schrieb:
>
>> In a Sph. project, we were given a ferrite core (~1 pound) and were told
>> to use it as a counter, adding up when a new car entered a parking lot,
>> and subtracting down when a car left. So, doing arithmetic in ferrite
>> cores has been around for a very long time, indeed. {{OH, BTW, the
>> purpose of the count was to prevent overflowing of the parking lot}}
>
> Sounds like an interesting project, I assume you could add some
> extra logic :-)
>
> Were there enough cores so you could use a one-hot representation,
> or did you have to do something more elaborate?

We use the hysteresis of the core to do the counting.
There was only 1 core.
Each count took a unit of energy to up/down count.