[vcf-midatlantic] Fwd: Sperry Univac Core - Which computer and Capacity?

Duane Craps DBC1964 at cox.net
Tue Jul 6 12:45:54 UTC 2021


I sent this from the wrong email



-------- Forwarded Message --------
Subject: 	Re: [vcf-midatlantic] Sperry Univac Core - Which computer and 
Capacity?
Date: 	Mon, 5 Jul 2021 20:59:46 -0400
From: 	Duane Craps <duaneb.craps at cox.net>
To: 	Douglas Crawford via vcf-midatlantic <vcf-midatlantic at lists.vcfed.org>



Douglass,

Not much help but looks like it is still in the federal supply system

https://www.dropbox.com/s/6ztq716e7053r80/2021-07-05.png?dl=0

Maybe TI has an online search tool.

Duane

On 7/5/2021 4:54 PM, Douglas Crawford via vcf-midatlantic wrote:
> The board has bottom row (nearest connectors) of TI ICs label SN97674J.
> Two of these have an extra designation "SN J55325J".
> There are two smashed ICs in this row that would need replacing which 
> I presume are the same ICs as the rest of the row.
> I'm not finding anything thing relevant on web searches, internet 
> archive, or any recent sales on ebay.
> Any recommendations on where else to look?
>
> On 6/24/2021 9:17 AM, Duane Craps via vcf-midatlantic wrote:
>> Here s a link to a manual on bitsavers:
>>
>> bitsavers.trailing-edge.com/pdf/univac/military/an_uyk-20/N00039-73-C-0431_AN_UYK-20_Technical_Manual_Volume_1_Jan1974.pdf 
>> <http://bitsavers.trailing-edge.com/pdf/univac/military/an_uyk-20/N00039-73-C-0431_AN_UYK-20_Technical_Manual_Volume_1_Jan1974.pdf> 
>>
>>
>>
>> looks to be preliminary information; it has a lot of hand drawn figures
>>
>> Memory description starts on page 3/49. paragraph 3-78
>>
>> There was a control board and a data board for each group of 4 memory 
>> cards.
>>
>> On 6/22/2021 12:15 PM, Douglas Crawford via vcf-midatlantic wrote:
>>> Board is identified as 90536-7128081-00 G
>>> Web hits on this are thin.
>>> Anyone know what Univac machine this is from and its capacity?
>>> I suppose count of the wires H x L  = # of bits of storage, and one 
>>> side is the word size of the computer?
>>> Confirmation?
>>> https://i.ebayimg.com/images/g/kw4AAOSwwlBgujxR/s-l1600.jpg
>>> Thanks,
>>> DC
>>>
-- 
Duane Craps
sdɐɹɔ ǝuɐnp



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