Uhhhh?
From the other responses you should know by now that these are ferrite
beads with wires running through them, forming a memory board. Small amount
of memory / lot of space / hard to build / expensive. Unlike today's memory
where we are counting gigabits for little money.
Can you imagine taking a piece of copper wire, making it as straight as
possible and shoving it through each row and column of these little beads
that were manually placed in a form? It takes time and patience!
Ahne.
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Eva J
Sent: 23 May, 2013 13:55
To: [log in to unmask]
Subject: Re: [TN] NTC: Pat Goodyear "Whatzit" Photos
EMI shielding material?
On Thu, May 23, 2013 at 4:44 PM, Ahne Oosterhof <[log in to unmask]> wrote:
> I remember seeing girls "weaving" those things when I worked at
> Philips in the late 60-s!
> Interesting to see them accomplish that, but not my cup of tea.
>
> Ahne.
>
> -----Original Message-----
> From: TechNet [mailto:[log in to unmask]] On Behalf Of Steve Gregory
> Sent: 23 May, 2013 13:04
> To: [log in to unmask]
> Subject: Re: [TN] NTC: Pat Goodyear "Whatzit" Photos
>
> Quoting Pat from the email he sent to me with the pictures:
>
> "Steve I am sending a couple of jpgs of core, can you post them with
> what-is-it titles? See if we can stir up some old memories.
> These are from a Westinghouse Prodac 250, I think they are either 2 -
> 1K memory cores, or possibly 4 bit x 1k.
> How would you like to sit and lace those. I have re soldered some
> that the wires were broke during cleaning.
>
> I grabbed this one when they scrapped the machine 20 years ago, it is
> dated 1971, I was a college freshman learning machine code
> programming, Fortran and Cobol, ah how times have changed..."
>
> Steve
>
> -----Original Message-----
> From: TechNet [mailto:[log in to unmask]] On Behalf Of Steve Gregory
> Sent: Thursday, May 23, 2013 11:02 AM
> To: [log in to unmask]
> Subject: [TN] NTC: Pat Goodyear "Whatzit" Photos
>
> Hey All,
>
>
>
> Pat Goodyear is probably unsubscribed now :o( but he sent me some
> photos on Tuesday to post on my page. From his email:
>
>
>
> Steve,
>
> I am sending a couple of jpgs of XXXX, can you post them with
> what-is-it titles? See if we can stir up some old memories....
>
>
>
> So I have posted them. Anybody have any ideas of what this is?
>
>
>
> http://stevezeva.homestead.com/Whatzit1.JPG
>
>
>
> http://stevezeva.homestead.com/Whatzit2.JPG
>
>
>
> http://stevezeva.homestead.com/Whatzit3.JPG
>
>
>
> He let me know what it is. I'll keep that to myself for a while to see
> if anybody really knows....
>
>
>
> Steve
>
>
>
>
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