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From: The Natural Philosopher <tnp@invalid.invalid>
Newsgroups: comp.os.linux.advocacy,comp.os.linux.misc
Subject: Re: Rewriting SSA. Is This A Chance For GNU/Linux?
Date: Sat, 5 Apr 2025 11:41:11 +0100
Organization: A little, after lunch
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On 05/04/2025 09:31, c186282 wrote:
> On 4/4/25 2:53 PM, rbowman wrote:
>> On Fri, 4 Apr 2025 08:30:23 -0400, c186282 wrote:
>>
>>> On 4/4/25 4:38 AM, The Natural Philosopher wrote:
>>>> On 04/04/2025 01:16, rbowman wrote:
>>>>> On Thu, 3 Apr 2025 16:38:57 -0400, c186282 wrote:
>>>>>
>>>>>>      The 360/370 boxes WERE really popular, so I'm gonna GUESS
>>>>>>      there's a least one or two still chugging away. Maint cost
>>>>>>      would be insane these days ... but you can kinda bury that in
>>>>>>      the budget while new hardware stands out more and in more
>>>>>>      places.
>>>>>
>>>>> I'm not sure there are any little old ladies left to knit magnetic
>>>>> core.
>>>>
>>>> Last time I looked they were little asian ladies wit teeny nimble
>>>> fingers.
>>>> Did all the coil winding in that factory.
>>>
>>>     Look up "rope memory"  :-)
>>
>> Then came twistor memory which begat bubble memory...
> 
>    Everybody had a trick back in the day. "Bubble"
>    wasn't bad really ... just couldn't push up
>    performance or capacity easily enough. Have you
>    ever looked into 'FRAM' - ferroelectric - mem for
>    embedded ? Much faster than flash, almost infinite
>    re-write capability, BUT they can't get the density
>    up much beyond the current, rather low, levels. It
>    still has a useful place (and I've used it) but it
>    has no "greater future" so far as I can discern.
> 
>    "Rope" was interesting because it was used in the
>    NASA lunar lander vehicle. Basically cores on loose
>    wire, and I think SPACING was important. Why the hell
>    did they use that in 1969 ? Because, the way things
>    work, the govt SPECS for the vehicle probably went
>    out the door before JFK even finished his moon speech.
>    That's where the e-tech was frozen for all intents.

Project I worked on was undersea repeater for optical cables.
Probably the worst organised and specified project ever, but that's a by 
the by. They said 'you are lucky we are allowed to use a silicon 
processor, up to 5 years ago we had to use germanium' 'Why?' Because 
that was the only technology more than 15 years old that could be 
guaranteed to last the 15 years'


-- 
The lifetime of any political organisation is about three years before 
its been subverted by the people it tried to warn you about.

Anon.