OT: Calculators: Where is the reciprocal key?...

[John Doe]

Is there a single key calculation for the reciprocal of a number on a typical
scientific calculator?

Is there some symbol besides \"1/x\" to look for?

Thanks.

 

[Anthony William Sloman]

On Thursday, April 14, 2022 at 1:01:38 AM UTC+10, John Doe wrote:

Is there a single key calculation for the reciprocal of a number on a typical
scientific calculator?

Is there some symbol besides \"1/x\" to look for?

The one I use most frequently - a Casio fx-82MS - uses x^-1. John Doe probably doesn\'t know enough about mathematical notation, to realise that this is what a superscript \"-1\" after the x implies.

--
Bill Sloman, Sydney

 

[John Doe]

I wonder if there is a psychoanalytical name for people who cannot speak
to others without insulting them at the same time. With some people, like
Bozo, it\'s obtuse...




Anthony William Sloman <bill.sloman@ieee.org> wrote:

On Thursday, April 14, 2022 at 1:01:38 AM UTC+10, John Doe wrote:
Is there a single key calculation for the reciprocal of a number on a typical
scientific calculator?

Is there some symbol besides \"1/x\" to look for?

The one I use most frequently - a Casio fx-82MS - uses x^-1. John Doe probably doesn\'t know enough about mathematical notation, to realise that this is what a superscript \"-1\" after the x implies.

 

[Martin Brown]

On 13/04/2022 16:01, John Doe wrote:

Is there a single key calculation for the reciprocal of a number on a typical
scientific calculator?

Usually. On mine \"1/x\" is next to sin, cos, tan.

InverseTrig \"1/x\" is cuberoot!

Is there some symbol besides \"1/x\" to look for?

divide = =

Will get you a functional equivalent for a single number.


--
Regards,
Martin Brown

 

[server]

On Wed, 13 Apr 2022 17:09:10 +0100, Martin Brown
<\'\'\'newspam\'\'\'@nonad.co.uk> wrote:

On 13/04/2022 16:01, John Doe wrote:
Is there a single key calculation for the reciprocal of a number on a typical
scientific calculator?

Usually. On mine \"1/x\" is next to sin, cos, tan.

InverseTrig \"1/x\" is cuberoot!

Is there some symbol besides \"1/x\" to look for?

divide = =

Will get you a functional equivalent for a single number.

My first calc was an HP35 ($400 at the time, the cost of a Honda S90
motorcycle) so I\'m a RPN slave. I buy old 32S2\'s now.

I need a good HP emulator for my Samsung phone. Any recommendations?



--

I yam what I yam - Popeye

 

[Anthony William Sloman]

On Thursday, April 14, 2022 at 1:49:56 AM UTC+10, John Doe wrote:

Anthony William Sloman <bill....@ieee.org> wrote:
On Thursday, April 14, 2022 at 1:01:38 AM UTC+10, John Doe wrote:
Is there a single key calculation for the reciprocal of a number on a typical
scientific calculator?

Is there some symbol besides \"1/x\" to look for?

The one I use most frequently - a Casio fx-82MS - uses x^-1. John Doe probably doesn\'t know enough about mathematical notation, to realise that this is what a superscript \"-1\" after the x implies.

I wonder if there is a psychoanalytical name for people who cannot speak to others without insulting them at the same time. With some people, like Bill, it\'s obtuse...

I can speak politely to people, and frequently do. John Doe doesn\'t deserve politeness, and I do take the trouble to make sure that all of my responses to any of his posts do convey my disapproval of his nasty habits. \"Blunt\" would be closer to the mark than \"obtuse\". The psychoanalytical name for this kind of behavior is \"sane\".

--
Bill Sloman, Sydney

 

[Jan Panteltje]

On a sunny day (Wed, 13 Apr 2022 15:01:31 -0000 (UTC)) it happened John Doe
<always.look@message.header> wrote in <t36oka$9pm$3@dont-email.me>:

Is there a single key calculation for the reciprocal of a number on a typical
scientific calculator?

Is there some symbol besides \"1/x\" to look for?

Thanks.

On my Casio fx-82TL
x-1

or
enter number
type =
then type 1/Ans (Ans is a key)

Amazing, had not used that calicalucilator for years..
miracle the battery still works
All screwed closed, no idea what I put in there,
see on the screws I had it open...
Curiosity awakened, opened it
Panasonic alkaline battery, still at 1.35 V
Casio makes some good stuff, have a radio watch from them too

But you cannot cut and paste from a calculator
so I use wcalc in Linux:
~ # wcalc
Enter an expression to evaluate, q to quit, or ? for help:
-> x=100
x = 100
-> x^-1
= 0.01

 

[Bertrand Sindri]

jlarkin@highlandsniptechnology.com wrote:
> I need a good HP emulator for my Samsung phone. Any recommendations?

This one is quite good:

https://play.google.com/store/apps/details?id=org.efalk.rpncalc&gl=US

 

[John Larkin]

On Wed, 13 Apr 2022 18:35:09 -0000 (UTC), Bertrand Sindri
<bertrand.sindri@yahoo.com> wrote:

jlarkin@highlandsniptechnology.com wrote:
I need a good HP emulator for my Samsung phone. Any recommendations?

This one is quite good:

https://play.google.com/store/apps/details?id=org.efalk.rpncalc&gl=US

Looks nice. I\'ll try it. Thanks.

It sort of looks like an old HP9100 desktop, the daddy of the HP35.

--

If a man will begin with certainties, he shall end with doubts,
but if he will be content to begin with doubts he shall end in certainties.
Francis Bacon

 

[server]

John Dope <always.look@message.header> wrote in
news:t36oka$9pm$3@dont-email.me:

Is there a single key calculation for the reciprocal of a number
on a typical scientific calculator?

Is there some symbol besides \"1/x\" to look for?

Thanks.

Enter 1 then divide then the number then equals.

Otherwise, single key IS the \"1/x\" key.
You really are getting senile.

 

[Gerhard Hoffmann]

Am 13.04.22 um 18:34 schrieb jlarkin@highlandsniptechnology.com:

I need a good HP emulator for my Samsung phone. Any recommendations?

I use Go41C now. In the Android store.

The cell phone with the app open looks like a glowing
HP41 in the dark. It gave a surreal impression to the
man who supervised my diploma thesis. We still meet
from time to time in a local pub. He was an early
adoptor. He is 85++ now. The numbers start to be
discomforting.

And on Windows: Warren Furlow\'s HP-41CX, or is it V41 officially? Perfect.

I bought my HP-35 when I was still at school. The father of
a classmate who worked for Brown, Boverie & Comp ordered them
for us. At this time, HP had not yet an end customer operation.
It was still in the HP test equipment section.
I still have it, as well as my HP-41C. They both would probably
work with new batteries.


Cheers, Gerhard

 

[server]

jlarkin@highlandsniptechnology.com wrote in
news:2nud5htqbiatthllnflni8phq04p0p0rob@4ax.com:

On Wed, 13 Apr 2022 17:09:10 +0100, Martin Brown
\'\'\'newspam\'\'\'@nonad.co.uk> wrote:

On 13/04/2022 16:01, John Doe wrote:
Is there a single key calculation for the reciprocal of a number
on a typical scientific calculator?

Usually. On mine \"1/x\" is next to sin, cos, tan.

InverseTrig \"1/x\" is cuberoot!

Is there some symbol besides \"1/x\" to look for?

divide = =

Will get you a functional equivalent for a single number.

My first calc was an HP35 ($400 at the time, the cost of a Honda
S90 motorcycle) so I\'m a RPN slave. I buy old 32S2\'s now.

I need a good HP emulator for my Samsung phone. Any
recommendations?

You can get one for your PC too.

You can even DL an Enigma machine and send coded messages between
two parties.

But for android... straight from the Hprse\'s mouth...

<https://play.google.com/store/apps/details?id=com.hp.hp15c15
&hl=en_US&gl=US>

 

[Bertrand Sindri]

DecadentLinuxUserNumeroUno@decadence.org wrote:

John Dope <always.look@message.header> wrote in
news:t36oka$9pm$3@dont-email.me:

Is there a single key calculation for the reciprocal of a number
on a typical scientific calculator?

Is there some symbol besides \"1/x\" to look for?

Enter 1 then divide then the number then equals.

Otherwise, single key IS the \"1/x\" key.
You really are getting senile.

Unless one is using an HP RPN calculator, then the keystrokes are:

1 [enter] number [divide]

 

[John Larkin]

On Wed, 13 Apr 2022 19:28:30 -0000 (UTC), Bertrand Sindri
<bertrand.sindri@yahoo.com> wrote:

DecadentLinuxUserNumeroUno@decadence.org wrote:
John Dope <always.look@message.header> wrote in
news:t36oka$9pm$3@dont-email.me:

Is there a single key calculation for the reciprocal of a number
on a typical scientific calculator?

Is there some symbol besides \"1/x\" to look for?

Enter 1 then divide then the number then equals.

Otherwise, single key IS the \"1/x\" key.
You really are getting senile.

Unless one is using an HP RPN calculator, then the keystrokes are:

1 [enter] number [divide]

Most have a 1/x key.

What resistor to put across 1K to get 400 ohms?

400
1/x
1000
1/x
-
1/x

--

If a man will begin with certainties, he shall end with doubts,
but if he will be content to begin with doubts he shall end in certainties.
Francis Bacon

 

[Jeroen Belleman]

On 2022-04-13 21:28, Bertrand Sindri wrote:

DecadentLinuxUserNumeroUno@decadence.org wrote:
John Dope <always.look@message.header> wrote in
news:t36oka$9pm$3@dont-email.me:

Is there a single key calculation for the reciprocal of a number
on a typical scientific calculator?

Is there some symbol besides \"1/x\" to look for?

Enter 1 then divide then the number then equals.

Otherwise, single key IS the \"1/x\" key.
You really are getting senile.

Unless one is using an HP RPN calculator, then the keystrokes are:

1 [enter] number [divide]

I have an HP11C and several HP32S calculators and they have
the reciprocal \"1/x\" key.

I hardly use them anymore though. These days, I most often
use something that resembles Unix\'s \"dc\" calculator, but
better adapted to scientific/engineering work, and which I
wrote myself. Its unique (I believe) feature is that it
can understand and print numbers with metric prefixes. So,
say, 1.2e-7 is the same as 120n.

Jeroen Belleman

 

[Cydrome Leader]

jlarkin@highlandsniptechnology.com wrote:

On Wed, 13 Apr 2022 17:09:10 +0100, Martin Brown
\'\'\'newspam\'\'\'@nonad.co.uk> wrote:

On 13/04/2022 16:01, John Doe wrote:
Is there a single key calculation for the reciprocal of a number on a typical
scientific calculator?

Usually. On mine \"1/x\" is next to sin, cos, tan.

InverseTrig \"1/x\" is cuberoot!

Is there some symbol besides \"1/x\" to look for?

divide = =

Will get you a functional equivalent for a single number.

My first calc was an HP35 ($400 at the time, the cost of a Honda S90
motorcycle) so I\'m a RPN slave. I buy old 32S2\'s now.

I use a new 35s. RPN really is cool, and prevents people from borrowing
your calculator.

> I need a good HP emulator for my Samsung phone. Any recommendations?

I can\'t put my finger on why, but the samsung calculator is annoying.

 

[John Doe]

John Larkin wrote:

> Most have a 1/x key.

Not on normal (scientific) calculators.

 

[Bertrand Sindri]

John Doe <always.look@message.header> wrote:

John Larkin wrote:

Most have a 1/x key.

Not on normal (scientific) calculators.

Factually incorrect:

Casio fx-77 scientific calculator photo (1/x key visible):

https://upload.wikimedia.org/wikipedia/commons/4/4f/FX-77.JPG

HP-35 photo (1/x key visible):

https://upload.wikimedia.org/wikipedia/commons/3/34/HP-35_Red_Dot.jpg

TI SR-50 photo (1/x key visible):

https://upload.wikimedia.org/wikipedia/commons/5/50/Texas_Instruments_SR-50.jpg

HP 48G photo (1/x key visible):

https://upload.wikimedia.org/wikipedia/commons/9/95/HP48G.jpg

HP 15C photo (1/x key visible):

https://upload.wikimedia.org/wikipedia/commons/6/65/Hp15c.jpg

 

[John Doe]

At least 90% of calculator apps on Google Play do not use \"1/x\", instead
they use \"X-1\".

This nym-shifting troll, never before posted to this group under its
current ID, points to Wikishit (for some strange reason) and mostly
Hewlett-Packard calculators, after I said \"normal calculators\".
Everybody knows HP calculators have never been considered NORMAL.

--
Bertrand Sindri <bertrand.sindri@yahoo.com> wrote:

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From: Bertrand Sindri <bertrand.sindri@yahoo.com
Newsgroups: sci.electronics.design
Subject: Re: OT: Calculators: Where is the reciprocal key?
Date: Wed, 13 Apr 2022 23:46:56 -0000 (UTC)
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John Doe <always.look@message.header> wrote:
John Larkin wrote:

Most have a 1/x key.

Not on normal (scientific) calculators.

Factually incorrect:

Casio fx-77 scientific calculator photo (1/x key visible):

https://upload.wikimedia.org/wikipedia/commons/4/4f/FX-77.JPG

HP-35 photo (1/x key visible):

https://upload.wikimedia.org/wikipedia/commons/3/34/HP-35_Red_Dot.jpg

TI SR-50 photo (1/x key visible):

https://upload.wikimedia.org/wikipedia/commons/5/50/Texas_Instruments_SR-50.jpg

HP 48G photo (1/x key visible):

https://upload.wikimedia.org/wikipedia/commons/9/95/HP48G.jpg

HP 15C photo (1/x key visible):

https://upload.wikimedia.org/wikipedia/commons/6/65/Hp15c.jpg

 

[Edward Hernandez]

The John Doe troll stated the following in message-id
<sdhn7c$pkp$4@dont-email.me>:

> The troll doesn\'t even know how to format a USENET post...

And the John Doe troll stated the following in message-id
<sg3kr7$qt5$1@dont-email.me>:

The reason Bozo cannot figure out how to get Google to keep from
breaking its lines in inappropriate places is because Bozo is
CLUELESS...

And yet, the clueless John Doe troll has continued to post incorrectly
formatted USENET articles that are devoid of content (latest example on
Thu, 14 Apr 2022 00:52:43 -0000 (UTC) in message-id
<t37r8q$o64$2@dont-email.me>).

NOBODY likes the John Doe troll\'s contentless spam.

Further, Troll Doe stated the following in message-id
<svsh05$lbh$5@dont-email.me> posted Fri, 4 Mar 2022 08:01:09 -0000
(UTC):

Compared to other regulars, Bozo contributes practically nothing
except insults to this group.

Yet, since Wed, 5 Jan 2022 04:10:38 -0000 (UTC) Troll Doe\'s post ratio
to USENET (**) has been 56.8% of its posts contributing \"nothing except
insults\" to USENET.

** Since Wed, 5 Jan 2022 04:10:38 -0000 (UTC) Troll Doe has posted at
least 999 articles to USENET. Of which 121 have been pure insults and
446 have been Troll Doe \"troll format\" postings.

This posting is a public service announcement for any google groups
readers who happen by to point out that the John Doe troll does not even
follow the rules it uses to troll other posters.

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