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Groups > comp.lang.python > #94058
| From | mm0fmf <none@mailinator.com> |
|---|---|
| Newsgroups | comp.lang.python |
| Subject | Re: Need assistance |
| References | (2 earlier) <nulla.epistola@web.de> <55AA2BDE.6050605@web.de> <201507181216.t6ICGBrY022256@fido.openend.se> <oqukqah82spi2ab4r2u9g3v6o9jh62sjtb@4ax.com> <mailman.680.1437240865.3674.python-list@python.org> |
| Message-ID | <pexqx.5711$2z2.879@fx04.am4> (permalink) |
| Organization | virginmedia.com |
| Date | 2015-07-18 19:51 +0100 |
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!
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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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