Article View: alt.folklore.computers
Article #620841Re: Implementation of a Turing Machine?
From: JimP
Date: Fri, 23 Feb 2018 19:19
Date: Fri, 23 Feb 2018 19:19
67 lines
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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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X-Received: by 10.55.32.10 with SMTP id g10mr1811434qkg.60.1519413653039; Fri, 23 Feb 2018 11:20:53 -0800 (PST) X-BeenThere: alt.folklore.computers@googlegroups.com Received: by 10.237.62.152 with SMTP id n24ls4366436qtf.3.gmail; Fri, 23 Feb 2018 11:20:50 -0800 (PST) X-Received: by 10.200.30.130 with SMTP id c2mr1860570qtm.59.1519413650975; Fri, 23 Feb 2018 11:20:50 -0800 (PST) Path: mbox-mo1.pugleaf.net!o9ni7864qte.1!nntp.google.com!peer01.iad!feed-me.highwinds-media.com!news.highwinds-media.com!spln!extra.newsguy.com!newsp.newsguy.com!news2 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 Lines: 67 Message-ID: <49q09dhfd5e6ojcla05e8486u3hmtr1ja0@4ax.com> References: <55cr8dd6kn7hl2b5dat7s74o13beb2946v@4ax.com> <201802211011054696-mlevinespmfltr@redshift.com> <55cr8dd6kn7hl2b5dat7s74o13beb2946v@4ax.com> <201802211011054696-mlevinespmfltr@redshift.com> <55cr8dd6kn7hl2b5dat7s74o13beb2946v@4ax.com> <201802211011054696-mlevinespmfltr@redshift.com> <qsdr8d92ofeqom41pd79lc4cdvovl3ffq4@4ax.com> <PM000565CD831FAC52@aca40a3b.ipt.aol.com> <q6uu8ddpt6fqlle4e5ga2hitnlsl3ussj2@4ax.com> <PM000565E3243474EC@aca40418.ipt.aol.com> NNTP-Posting-Host: p38aa604e45543c92cac432c7ad76fe7ac4abd76c306024f6.newsdawg.com Mime-Version: 1.0 User-Agent: ForteAgent/8.00.32.1272 X-Received-Bytes: 3527 X-Received-Body-CRC: 1984268891 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit