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Re: Need assistance

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Date Sat, 18 Jul 2015 15:10:50 -0400
Subject Re: Need assistance
From Joel Goldstick <joel.goldstick@gmail.com>
Cc "python-list@python.org" <python-list@python.org>
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On Sat, Jul 18, 2015 at 2:51 PM, mm0fmf via Python-list
<python-list@python.org> wrote:
> On 18/07/2015 18:34, Mark Lawrence wrote:
>>
>>
>> What is an {HP calculator} roll operation?
>
>
> HP calculators were proper in that they used RPN entry.
>
> i.e. 2 enter 2 + would show 4 instead of 2 + 2 =
>
> Gawd it's so long but ISTR there were 3 stack registers and the display. So
> you could press
>
> 1 enter
> 2 enter
> 3 enter
> 4
>
> and Z = 1, Y = 2, X = 3 and display = 4. Roll would rotate the entries
> through the display register.
>
> ROLL and Z = 2, Y = 3, X = 4 and display = 1
>
> and so on. There was an INV ROLL to go the other way.
>
> The 3 level stack was equivalent to nesting parentheses three times. I only
> had a TI-59 as it was half the price of an HP67. The TI had more memories
> and program steps and was faster. But it didn't say HP on the front!
>
I have an hp35.  But to be 'really' cool you have to have an hp35 that
just says hp.  Those were the very first ones

-- 
Joel Goldstick
http://joelgoldstick.com

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Thread

Need assistance craig.sirna@gmail.com - 2015-07-16 19:15 -0700
  Re: Need assistance Michael Torrie <torriem@gmail.com> - 2015-07-16 20:40 -0600
    Re: Need assistance craig.sirna@gmail.com - 2015-07-16 20:00 -0700
      RE: Need assistance "Joseph Lee" <joseph.lee22590@gmail.com> - 2015-07-16 20:12 -0700
  RE: Need assistance "Joseph Lee" <joseph.lee22590@gmail.com> - 2015-07-16 19:44 -0700
  Re: Need assistance Michael Torrie <torriem@gmail.com> - 2015-07-16 21:00 -0600
  Re: Need assistance Rob Gaddi <rgaddi@technologyhighland.invalid> - 2015-07-17 16:40 +0000
    Re: Need assistance Igor Korot <ikorot01@gmail.com> - 2015-07-17 12:54 -0400
    Re: Need assistance Mark Lawrence <breamoreboy@yahoo.co.uk> - 2015-07-17 20:00 +0100
  Re: Need assistance Denis McMahon <denismfmcmahon@gmail.com> - 2015-07-18 00:40 +0000
    Re: Need assistance Sibylle Koczian <nulla.epistola@web.de> - 2015-07-18 12:35 +0200
      Re: Need assistance Denis McMahon <denismfmcmahon@gmail.com> - 2015-07-19 00:59 +0000
        Re: Need assistance MRAB <python@mrabarnett.plus.com> - 2015-07-19 17:35 +0100
          flipping string order Denis McMahon <denismfmcmahon@gmail.com> - 2015-07-19 18:06 +0000
    Re: Need assistance Laura Creighton <lac@openend.se> - 2015-07-18 14:16 +0200
    RE: Need assistance "Joseph Lee" <joseph.lee22590@gmail.com> - 2015-07-18 09:05 -0700
    Re: Need assistance Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2015-07-18 12:18 -0400
    Re: Need assistance Mark Lawrence <breamoreboy@yahoo.co.uk> - 2015-07-18 18:34 +0100
      Re: Need assistance mm0fmf <none@mailinator.com> - 2015-07-18 19:51 +0100
        Re: Need assistance Joel Goldstick <joel.goldstick@gmail.com> - 2015-07-18 15:10 -0400
          Re: Need assistance mm0fmf <none@mailinator.com> - 2015-07-18 20:35 +0100
        Re: Need assistance Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2015-07-18 17:44 -0400
        Re: Need assistance Michael Torrie <torriem@gmail.com> - 2015-07-18 20:46 -0600
    Re: Need assistance Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2015-07-18 17:34 -0400
    Re: Need assistance William Ray Wing <wrw@mac.com> - 2015-07-18 14:28 -0400
    Re: Need assistance MRAB <python@mrabarnett.plus.com> - 2015-07-19 01:14 +0100
  Re: Need assistance craig.sirna@gmail.com - 2015-07-19 16:06 -0700
    Re: Need assistance Michael Torrie <torriem@gmail.com> - 2015-07-19 17:56 -0600
    Re: Need assistance Rick Johnson <rantingrickjohnson@gmail.com> - 2015-07-19 17:21 -0700
      Re: Need assistance Michael Torrie <torriem@gmail.com> - 2015-07-19 23:16 -0600
      Re: Need assistance Chris Angelico <rosuav@gmail.com> - 2015-07-20 15:25 +1000

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