Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > comp.lang.python > #94058

Re: Need assistance

Path csiph.com!optima2.xanadu-bbs.net!xanadu-bbs.net!feeder.erje.net!1.eu.feeder.erje.net!newsfeed.fsmpi.rwth-aachen.de!newsfeed.straub-nv.de!feed.xsnews.nl!fbe002.ams.xsnews.nl!ecngs!feeder.ecngs.de!81.171.118.62.MISMATCH!peer02.fr7!news.highwinds-media.com!post02.fr7!fx04.am4.POSTED!not-for-mail
From mm0fmf <none@mailinator.com>
User-Agent Mozilla/5.0 (Windows NT 6.1; WOW64; rv:17.0) Gecko/20130801 Thunderbird/17.0.8
MIME-Version 1.0
Newsgroups comp.lang.python
Subject Re: Need assistance
References <225d4ac6-3b88-4844-805b-b4b00cd62ef4@googlegroups.com> <moc7aa$geg$1@dont-email.me><55AA2BDE.6050605@web.de> <nulla.epistola@web.de> <55AA2BDE.6050605@web.de> <201507181216.t6ICGBrY022256@fido.openend.se> <oqukqah82spi2ab4r2u9g3v6o9jh62sjtb@4ax.com> <mailman.680.1437240865.3674.python-list@python.org>
In-Reply-To <mailman.680.1437240865.3674.python-list@python.org>
Content-Type text/plain; charset=windows-1252; format=flowed
Content-Transfer-Encoding 7bit
Lines 27
Message-ID <pexqx.5711$2z2.879@fx04.am4> (permalink)
NNTP-Posting-Host 92.236.234.65
X-Complaints-To http://netreport.virginmedia.com
X-Trace 1437245461 92.236.234.65 (Sat, 18 Jul 2015 18:51:01 UTC)
NNTP-Posting-Date Sat, 18 Jul 2015 18:51:01 UTC
Organization virginmedia.com
Date Sat, 18 Jul 2015 19:51:00 +0100
X-Received-Body-CRC 1851261237
X-Received-Bytes 1919
Xref csiph.com comp.lang.python:94058

Show key headers only | View raw

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!

Back to comp.lang.python | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

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

csiph-web