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Re: What is the oldest computer that could be used today for real work? [message #411080 is a reply to message #411064] Sat, 18 September 2021 14:02 Go to previous messageGo to previous message
Peter Flass is currently offline  Peter Flass
Messages: 8375
Registered: December 2011
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Branimir Maksimovic <branimir.maksimovic@gmail.com> wrote:
> On 2021-09-08, Peter Flass <peter_flass@yahoo.com> wrote:
>> John Goerzen <jgoerzen@complete.org> wrote:
>>> On 2021-09-07, J Clarke <jclarke.873638@gmail.com> wrote:
>>>> > https://governor.kansas.gov/wp-content/uploads/2021/04/Ginth erTaxCouncilKDOT.pdf
>>>> > hints that it may be an IBM System 370/Model 145.
>>>>
>>>> I'd be very surprised if it actually was. When did IBM end
>>>> maintenance on those?
>>>
>>> I have no more information, other than that link claims "The Kansas UI System
>>> runs on a Mainframe that was installed in 1977."
>>>
>>> Is it possible the hardware was upgraded to something that can emulate the
>>> 370/145, and that difference was lost on a non-technical author? Sure.
>>>
>>> I have known other places to run mainframes an absurdly long time. I've seen it
>>> in universities and, of course, there's the famous CompuServe PDP-10 story -
>>> though presumably they had more technical know-how to keep their PDP-10s alive.
>>> You are right; it does seem farfetched.
>>>
>>> ... so I did some more digging, and found
>>> https://ldh.la.gov/assets/medicaid/mmis/docs/IVVRProcurement Library/Section3RelevantCorporateExperienceCorporateFinancia lCondition.doc
>>> which claims that the "legacy UI system applications run on the Kansas
>>> Department of Administration's OBM OS/390 mainframe."
>>>
>>> I know little of IBM's mainframe lineup, but
>>> https://en.wikipedia.org/wiki/IBM_System/390 claims that the System/390 has some
>>> level of compatibility with the S/370.
>>>
>>> - John
>>>
>>
>> You can still run programs compiled on a 360 on the latest ā€œzā€ box.
>>
> Why?
>

Because they still work, and do what you need them to do. If it works,
leave it alone.

--
Pete
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