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Article #620841

Re: Implementation of a Turing Machine?

#620841
From: JimP
Date: Fri, 23 Feb 2018 19:19
67 lines
3990 bytes
On 23 Feb 2018 15:36:12 GMT, jmfbahciv <See....@aol.com> wrote:

>JimP wrote:
>> On 22 Feb 2018 13:37:29 GMT, jmfbahciv <See....@aol.com> wrote:
>>
>>>JimP wrote:
>>>> On Wed, 21 Feb 2018 10:11:05 -0800, Michael LeVine
>>>> <mlevine...@redshift.com> wrote:
>>>>
>>>>>On 2018-02-21 17:48:34 +0000, Gene Wirchenko said:
>>>>>
>>>>>> On 21 Feb 2018 11:13:54 GMT, maus <ma...@mail.com> wrote:
>>>>>>
>>>>>>> On 2018-02-20, Gene Wirchenko <ge...@telus.net> wrote:
>>>>>>>> On Mon, 19 Feb 2018 09:11:12 +0000, Gareth's Downstairs Computer
>>>>>>>> <headstone255.but.n...@yahoo.com> wrote:
>>>>>>>>
>>>>>>>>> On 19/02/2018 07:26, Gene Wirchenko wrote:
>>>>>>>>
>>>>>>>>> Not enough description of the state machine, though, for
>>>>>>>>> each state need to know action if 1 or 0 read, whether to
>>>>>>>>> write back 1 or 0, and next state whether 1 or 0 read.
>>>>>>>>>
>>>>>>>>> It is particularly fascinating that a Turing Machine could
>>>>>>>>> have been built with the technology available at the time
>>>>>>>>> it was first postualted (1935?)
>>>>>>>>
>>>>>>>> I do not think that that is that notable.  The machine could have
>>>>>>>> been made back in Babbage's time.  (Too bad Babbage did not come up
>>>>>>>> with something more immediately practical.)
>>>>>>
>>>>>>> AFAIhaveread, the problem was that it not possible to machine parts to
>>>>>>> the limits that Babbage's machines needed, at that time.
>>>>>>
>>>>>>      I was thinking of that plus that Babbage did not get something
>>>>>> practical going.  That might have helped get mechanical computing
>>>>>> going big.
>>>>>>
>>>>>> Sincerely,
>>>>>>
>>>>>> Gene Wirchenko
>>>>>
>>>>>His difference engine was built tothe same tolerance's that were
>>>>>available in his time,
>>>>>and it worked as designed.
>>>>>https://www.youtube.com/watch?v=be1EM3gQkAY
>>>>>https://www.youtube.com/watch?v=BlbQsKpq3Ak
>>>>
>>>> The antikythera mechanism was built to very tight tolerances and
>>>> worked.
>>>
>>>I didn't know that someone actuallly figured out how to make one.
>>>Nice PhD project :-)
>>>
>>>/BAH
>>
>> There was a PhD in England who would make one, for $4,000. Shipping
>> not included.
>
>The last time I investigated someobody was starting to try to
>replicate the one found in the Mediterranean.  I'm glad he
>succeeded.
>
>/BAH

The only one I have heard of is the one found in the Mediterranean
about 1900.
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From: JimP <solo...@gmail.com>
Newsgroups: alt.folklore.computers
Subject: Re: Implementation of a Turing Machine?
Date: Fri, 23 Feb 2018 13:19:56 -0600
Organization: NewsGuy.com
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