Author Topic: What's your favorite calculator?  (Read 3143 times)

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Offline zbrown

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What's your favorite calculator?
« on: August 11, 2019, 09:02:10 pm »
I personally like the HP Prime a lot, as it's touchscreen, has the best keyboard on any calculator I've ever used, and a lot of EE tools for it can be found online. What are your picks?
 

Offline oPossum

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Re: What's your favorite calculator?
« Reply #1 on: August 11, 2019, 09:05:47 pm »
HP 41CX
 

Offline 0culus

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Re: What's your favorite calculator?
« Reply #2 on: August 11, 2019, 09:19:16 pm »
I have to pick one?  :-DD

My HP-15C is probably the one I reach for the most. I have choices though:

HP-15C
2 x HP-16C (one lives in my desk at work)
HP-45 (mint condition with all the original stuff in the nice box)
HP-35 reissue (probably one of the best modern RPN calculators still available new)
HP-50g (pretty rare I use it; if I need to do plotting, computer tools are way better)
 

Offline Ampera

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Re: What's your favorite calculator?
« Reply #3 on: August 11, 2019, 09:28:40 pm »
Hello me from the past! I recall making the same exact forum post with the same exact answer.

I could easily say the HP Prime, as it's a modern calculator with a (for a calculator) blazing fast 400Mhz ARM processor, colour touch screen, and good implementations of giac and RPN, along with a great suite of graphing utilities that fully take advantage of the touch screen.

However I'm not going to say that it's my favourite, and while it's definitely the most impressive one I own, I have to give that trophy to the HP 50g, which has one of, if not the best RPN implementations available. RPN CAS with textbook notation! It's amazingly fluid too, especially if you are used to RPN, and it is one of the rare instances where I think a calculator is actually fun to use.

The HP 48g, which is my only other calculator, takes third place, but shouldn't be considered as bad either. For the time it was available, it was easily one of the most impressive calculators around, and I wish I had one of the variations that had CAS, as I'm wondering if it has the same system the HP 50g has (making it both historically and visually interesting, as well as crazily useful).

The answers you will get,  however, depends on who is doing what. HP calcs have been a fan of EEs and more power users for decades, but almost everyone on the planet has had the misfortune to use a Z80 based Ti calculator, and a lot of people only think of those as the best graphing calculators can be, which just annoys me. I am actually rather interested in the 68k calcs (as I love the 68k) but I don't expect those to be particularly impressive compared to a Saturn or ARM based HP calculator of similar vintage.
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Offline floobydust

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Re: What's your favorite calculator?
« Reply #4 on: August 11, 2019, 09:30:11 pm »
I didn't like RPN and went with Sharp pocket calculators, like EL5103 and EL9000.
The HP's would plot equations and do integration, so they were the best in university though.
 

Offline Cyberdragon

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Re: What's your favorite calculator?
« Reply #5 on: August 11, 2019, 09:41:47 pm »
Do we have to actually own them or can they be totally unubtanium?

1. Curta
2. Wang 700
3. Anita Mk 10
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Offline windsmurf

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Re: What's your favorite calculator?
« Reply #6 on: August 11, 2019, 09:43:10 pm »
I always thought this was really cool.... not my favorite as I don't have one, and have never handled one before...

808689-0

Oh Curta was mentioned above so I'm adding this:

« Last Edit: August 11, 2019, 09:47:58 pm by windsmurf »
 

Offline Cyberdragon

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Re: What's your favorite calculator?
« Reply #7 on: August 11, 2019, 09:46:01 pm »
Ah a fellow Curta man, I see you are a man of class. ;D
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Offline Ampera

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Re: What's your favorite calculator?
« Reply #8 on: August 11, 2019, 09:47:11 pm »
Oh yeah the math grenade is a real neat piece of kit.
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Offline Kjelt

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Re: What's your favorite calculator?
« Reply #9 on: August 11, 2019, 09:54:04 pm »
HP48GX been using it for over 25 years
 

Offline mc172

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Re: What's your favorite calculator?
« Reply #10 on: August 11, 2019, 10:22:26 pm »
My fx-85GT does me well but I'm led to believe that in the elite calculator circles this isn't good enough. No idea why!
 

Offline rsjsouza

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Re: What's your favorite calculator?
« Reply #11 on: August 11, 2019, 10:23:34 pm »
I also replied to Ampera's old thread as well. My heart belongs to many models, and I am faithful to all of them! :D

My favourite is the HP48 - I got a 48SX in 1991 but about 20 years later it simply died. My wife then kindly gave me her 48GX which is still alive and well. At work I have a HP35S that does an excellent job for me (too afraid to leave the 48GX there and have it "borrowed" by someone that does not intend to return it).

I started with my dad's TI-59 (first thing I ever programmed) and I currently have a TI-66 just to flex my programming muscle memory. I love both, although the 59 still holds a special place in my heart.

My first actual calculator was a Casio fx-39 given to me by my dad in 1982. I still have it, along with my brother's and another one I got a few years ago in the hopes to get it working again. Unfortunately the Casios of the time had a very bad keyboard resistive mat that becomes brittle and ceases to work after a few years...

(edit) oh, and I forgot a HP11C that I got a few years back on the local market with the intention to turn a profit. Something about the Voyager calculators (TI66 as well) made me fall in love with it. Never sold it and currently don't plan to do it.
« Last Edit: August 11, 2019, 10:25:48 pm by rsjsouza »
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Online NiHaoMike

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Re: What's your favorite calculator?
« Reply #12 on: August 11, 2019, 10:25:04 pm »
TI-89 Titanium. I had to get one for college, and it still works, so why not keep using it?
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Offline SiliconWizard

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Re: What's your favorite calculator?
« Reply #13 on: August 11, 2019, 10:50:55 pm »
I still have a HP48G+. I don't use it very often anymore though, but it works perfectly. When in front of a computer, I use computer tools and calculators. If not, most often my phone (using free42 mostly).
But it's nice to go back to a real calculator every once in a while.
 

Offline DIPLover

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Re: What's your favorite calculator?
« Reply #14 on: August 11, 2019, 11:07:47 pm »
T.I. 92 plus

MAN I love that thing.
 

Offline eugenenine

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Re: What's your favorite calculator?
« Reply #15 on: August 11, 2019, 11:20:10 pm »
HP 48sx, died last year so I had to fix it.
 

Offline Mr. Scram

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Re: What's your favorite calculator?
« Reply #16 on: August 12, 2019, 12:13:30 am »
The nearest one with the feature I need.
 

Offline VK3DRB

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Re: What's your favorite calculator?
« Reply #17 on: August 12, 2019, 12:19:43 am »
RealCalc Scientific Calculator (Android only). Why?

- Brilliantly designed by an electronics engineer.
- Does RPN as well as traditional algebraic.
- Best GUI around, with haptic keypress feedback.
- Great for embedded programming.
- Does conversions etc.
- Extremely convenient.
- Is free, but worth the couple of dollars for the extra features and to reward the developer.

For a desk based calculator, I use have the Farad 808 scientific calculator - still working since I bought it in 1976 during my final year of high school, with its beautiful green vacuum fluorescent display. I've had many, many calculators since 1976. But almost exclusively I use RealCalc now. Favourite programmable calculator was the TI SR56, which I bought for uni in 1977.
 

Offline David Hess

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Re: What's your favorite calculator?
« Reply #18 on: August 12, 2019, 02:23:08 am »
My first choice is the HP48g but only because the HP50g which replaced it is slower and less reliable.
 

Offline Rick Law

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Re: What's your favorite calculator?
« Reply #19 on: August 12, 2019, 04:48:33 am »
HP45.  I love that calculator.  I have the calculator case still, but I have no recollection what might have happened to it.
 

Offline 2N3055

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Re: What's your favorite calculator?
« Reply #20 on: August 12, 2019, 06:47:19 am »
Casio fx-61F.
 

Offline emece67

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Re: What's your favorite calculator?
« Reply #21 on: August 12, 2019, 07:42:33 am »
hp 15C
Information must flow.
 

Offline Keicar

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Re: What's your favorite calculator?
« Reply #22 on: August 12, 2019, 08:09:42 am »
Sharp EL-5100
 

Offline NANDBlog

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Re: What's your favorite calculator?
« Reply #23 on: August 12, 2019, 08:49:48 am »

It's a beauty, does all kinds of engineering stuff.
 

Offline JPortici

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Re: What's your favorite calculator?
« Reply #24 on: August 12, 2019, 08:59:12 am »
^ ssssh, they're going to label you as a bean counter  :-DD

my calc of choice is the CASIO FX-991EX
i'm a casio guy. They just feel so natural to me
« Last Edit: August 13, 2019, 08:00:43 am by JPortici »
 

Offline Dave_PT

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Re: What's your favorite calculator?
« Reply #25 on: August 12, 2019, 09:23:56 am »
I love the CASIO FX9860G.



Until today I use it at work, with a emulation SW.

You can download it from this link:

https://app.box.com/s/jrfasue24x2tven74516
 

Offline Black Phoenix

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Re: What's your favorite calculator?
« Reply #26 on: August 12, 2019, 09:25:30 am »
TI89 Titanium, coupled with the following program available in the TI website:

Quote
EE*Pro® for TI-89 Titanium

EE*Pro®, by da Vinci Technologies Group, Inc., is an all-inclusive app for electrical engineering students, which helps them study concepts for EE coursework. Choose from more than 700 equations and data commonly needed by electrical engineering professionals.

Organized into the following convenient sections:

    Analysis
    Equations
    Reference


Bought a lot of years ago new, always used since then and never felt the need for a new one.
 

Offline eugenenine

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Re: What's your favorite calculator?
« Reply #27 on: August 12, 2019, 01:01:59 pm »

It's a beauty, does all kinds of engineering stuff.

Until you find all the issues/bugs in it.  Open/LibreOffice Calc is a lot better
 
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Offline hwj-d

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Re: What's your favorite calculator?
« Reply #28 on: August 12, 2019, 02:00:19 pm »
excel
It's a beauty, does all kinds of engineering stuff.

Until you find all the issues/bugs in it.  Open/LibreOffice Calc is a lot better

YESSS   :-+
 
(but go for LibreOffice)
« Last Edit: August 12, 2019, 02:04:52 pm by hwj-d »
 

Online TimNJ

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Re: What's your favorite calculator?
« Reply #29 on: August 12, 2019, 02:02:29 pm »
Archimedes for iOS. I have a beautiful TI SR-50 on my desk too, but I've used it about once this year because Archimedes is just that good.
 

Offline hwj-d

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Re: What's your favorite calculator?
« Reply #30 on: August 12, 2019, 02:13:15 pm »
 

Offline bd139

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Re: What's your favorite calculator?
« Reply #31 on: August 12, 2019, 02:15:05 pm »
HP 35s here.

Not as powerful as my former 50g but I can keep how it works in my head :)
 
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Offline Lord of nothing

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Re: What's your favorite calculator?
« Reply #32 on: August 12, 2019, 02:50:01 pm »
%windir%\system32\calc.exe  :-DMM
Made in Japan, destroyed in Sulz im Wienerwald.
 

Offline rstofer

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Re: What's your favorite calculator?
« Reply #33 on: August 12, 2019, 06:07:09 pm »
I have the more modern TI & HP models but I prefer, and use, my HP48GX.

Other tools include wxMaxima, MATLAB, Fortran, Desmos.com, Symbolab.com and others.
 

Offline frozenfrogz

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Re: What's your favorite calculator?
« Reply #34 on: August 12, 2019, 07:03:53 pm »
HP 16C
He’s like a trained ape. Without the training.
 
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Offline dunkemhigh

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Re: What's your favorite calculator?
« Reply #35 on: August 12, 2019, 08:50:07 pm »
Like t'other chap I use realcalc on Android (in RPN mode), but for PC use there is Opalcalc:

https://www.skytopia.com/software/opalcalc/
 

Offline malagas_on_fire

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Re: What's your favorite calculator?
« Reply #36 on: August 12, 2019, 09:11:43 pm »
Casio fx-570W

« Last Edit: August 12, 2019, 09:25:13 pm by malagas_on_fire »
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Offline MrMobodies

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Re: What's your favorite calculator?
« Reply #37 on: August 12, 2019, 09:13:39 pm »
I got an old Texas Instruments TI-92 PLUS.

I like how I can go back to the calculations using the arrow keys to check for typos and alter them.
 

Offline Gyro

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Re: What's your favorite calculator?
« Reply #38 on: August 12, 2019, 09:15:27 pm »


That'll teach me to take evening photos under indoor lighting - the colour rendition is way off!  ::)
« Last Edit: August 12, 2019, 09:30:14 pm by Gyro »
Chris

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Offline Stray Electron

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Re: What's your favorite calculator?
« Reply #39 on: August 12, 2019, 09:23:58 pm »
HP45.  I love that calculator.  I have the calculator case still, but I have no recollection what might have happened to it.

  LOL!  I was digging through a pile of stuff today and found a box for a HP-45 with the charger and original book.  I have no idea where the calculator went.
 

Offline malagas_on_fire

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Re: What's your favorite calculator?
« Reply #40 on: August 12, 2019, 09:26:43 pm »
If one can make knowledge flow than it will go from negative to positve , for real
 
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Offline Lord of nothing

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Re: What's your favorite calculator?
« Reply #41 on: August 12, 2019, 09:34:20 pm »
YEY Palm is my favourite to!
Made in Japan, destroyed in Sulz im Wienerwald.
 
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Offline Stray Electron

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Re: What's your favorite calculator?
« Reply #42 on: August 13, 2019, 12:02:26 am »
  What? No one has mentioned the HP 9100! Everyone needs a calculator that weighs 40 odd pounds and uses core memory and a masked off CRT display! https://www.hpmuseum.org/hp9100.htm
 
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Offline Cyberdragon

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Re: What's your favorite calculator?
« Reply #43 on: August 13, 2019, 04:23:58 am »
  What? No one has mentioned the HP 9100! Everyone needs a calculator that weighs 40 odd pounds and uses core memory and a masked off CRT display! https://www.hpmuseum.org/hp9100.htm

As pretty as that display is, I'll have to stick with the Wang 700 for the tape drive instead of magnetic card. (Unless there is an accessory adaptor or something).
« Last Edit: August 13, 2019, 05:04:26 am by Cyberdragon »
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Offline NANDBlog

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Re: What's your favorite calculator?
« Reply #44 on: August 13, 2019, 07:36:59 am »
excel
It's a beauty, does all kinds of engineering stuff.

Until you find all the issues/bugs in it.  Open/LibreOffice Calc is a lot better

YESSS   :-+
 
(but go for LibreOffice)

Nah. All these altoffices, i dislike them very much. They put buttons and menus in the wrong places, so it takes ages to find them. Time is money, excel is cheap. Not to mention, I can log directly into a report with a 34465A in excel. By pressing buttons. Try doing this in any of the altoffices. Or any calculator.
 

Offline JPortici

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Re: What's your favorite calculator?
« Reply #45 on: August 13, 2019, 08:03:31 am »
I love the CASIO FX9860G.



Until today I use it at work, with a emulation SW.

You can download it from this link:

https://app.box.com/s/jrfasue24x2tven74516

i have that one too.. but i don't remember where :( too bulky though, doesn't fit the pocket :P
Also if i found it i would start playing minesweeper again :palm:
 

Offline Howardlong

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Re: What's your favorite calculator?
« Reply #46 on: August 13, 2019, 08:19:47 am »
FX991D.

It has a persisted ENG mode and is simple direct entry.

Almost all regularly used functions are single keystrokes, the exception being x<>y which is shifted.

Also almost identical functionally are: FX570D, FX570AD, FX570CD, FX115D, FX991D and FX100D. Some are without solar, and some have a slightly different form factor.

 

Offline Zucca

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Re: What's your favorite calculator?
« Reply #47 on: August 13, 2019, 08:48:19 am »
Wolfram Products are the most powerful calculator I came across

For example

Wolfram Mathematica

Wolframalpha

Right now I am a bored EE, but when I was a student Wolfram was the hottest shit.
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Offline Gary350z

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Re: What's your favorite calculator?
« Reply #48 on: August 13, 2019, 10:55:04 am »
HP-11C
Mine is about 34 years old and still works perfect.
Here's a picture. Enlarge and enjoy. ;D
 
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Offline bd139

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Re: What's your favorite calculator?
« Reply #49 on: August 13, 2019, 10:59:11 am »
Nice to see one in such good condition  :-+
 

Offline tggzzz

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Re: What's your favorite calculator?
« Reply #50 on: August 13, 2019, 11:02:36 am »
Either a British Thornton AA010 comprehensive, or, if I want a spreadsheet, an HP95LX.
There are lies, damned lies, statistics - and ADC/DAC specs.
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Offline eugenenine

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Re: What's your favorite calculator?
« Reply #51 on: August 13, 2019, 12:40:34 pm »
excel
It's a beauty, does all kinds of engineering stuff.

Until you find all the issues/bugs in it.  Open/LibreOffice Calc is a lot better

You missed the point though.  Excel has enough issues/bugs that its not reliable for any kind of serious work.
YESSS   :-+
 
(but go for LibreOffice)

Nah. All these altoffices, i dislike them very much. They put buttons and menus in the wrong places, so it takes ages to find them. Time is money, excel is cheap. Not to mention, I can log directly into a report with a 34465A in excel. By pressing buttons. Try doing this in any of the altoffices. Or any calculator.
 

Offline 2N3055

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Re: What's your favorite calculator?
« Reply #52 on: August 13, 2019, 12:50:51 pm »
excel
It's a beauty, does all kinds of engineering stuff.

Until you find all the issues/bugs in it.  Open/LibreOffice Calc is a lot better

YESSS   :-+
 
(but go for LibreOffice)

Nah. All these altoffices, i dislike them very much. They put buttons and menus in the wrong places, so it takes ages to find them. Time is money, excel is cheap. Not to mention, I can log directly into a report with a 34465A in excel. By pressing buttons. Try doing this in any of the altoffices. Or any calculator.

I agree. I tried many times, and after a while I just go and give money to Microsoft. I don't like them, but stuff simply works.
 

Offline hwj-d

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Re: What's your favorite calculator?
« Reply #53 on: August 13, 2019, 10:01:16 pm »
Your fault. LibreOffice is simple to learn.  :popcorn:
 ^-^
 

Offline 2N3055

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Re: What's your favorite calculator?
« Reply #54 on: August 13, 2019, 11:31:19 pm »
Your fault. LibreOffice is simple to learn.  :popcorn:
 ^-^
LOL, thank you for calling me stupid.  :-DD

I know how to use it, and have been trying to use it on and off for many years now.
News flash , it's not me, Libre Office is stupid. As in, by not being compatible with MS Office, none of the third party stuff works, I cannot exchange files with colleagues (working on files, collaborating) etc etc. Keysight has several great plugins where you can directly connect to instruments and automate them directly from MS Office... Etc, etc.  If I lived in vacuum, and all I was doing was creating documents from the scratch and when done sending people PDFs of final documents Libre Office would be fine. But I don't.
Therefore MS Office for me.
 

Offline hwj-d

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Re: What's your favorite calculator?
« Reply #55 on: August 14, 2019, 12:35:00 am »
Your fault. LibreOffice is simple to learn.  :popcorn:
 ^-^
LOL, thank you for calling me stupid.  :-DD
Yes, you are NOT stupid. You are NOT stupid. That's enough?  ^-^

Quote
I know how to use it, and have been trying to use it on and off for many years now.
News flash , it's not me, Libre Office is stupid. As in, by not being compatible with MS Office, none of the third party stuff works, I cannot exchange files with colleagues (working on files, collaborating) etc etc. Keysight has several great plugins where you can directly connect to instruments and automate them directly from MS Office... Etc, etc.  If I lived in vacuum, and all I was doing was creating documents from the scratch and when done sending people PDFs of final documents Libre Office would be fine. But I don't.
Therefore MS Office for me.
Me too, and I'm happy with LO all the years! And LO is also not stupid!  :-DD
And now?  :horse:

Belive me, that's all a subjektive perception and familiarization.
Peace ...

Edit: But stop, there is one big difference. Excel is MS(proprietary), and LO is ODF(ISO)
« Last Edit: August 14, 2019, 12:51:53 am by hwj-d »
 

Offline hagster

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Re: What's your favorite calculator?
« Reply #56 on: August 14, 2019, 05:19:07 am »
GNU Octave
 

Offline 2N3055

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Re: What's your favorite calculator?
« Reply #57 on: August 14, 2019, 06:25:33 am »
Yes, you are NOT stupid. You are NOT stupid. That's enough?  ^-^
OK then. I will stop crying now...

 :-+ It is nice when people have sense of humor...

Me too, and I'm happy with LO all the years! And LO is also not stupid!  :-DD
And now?  :horse:

Belive me, that's all a subjektive perception and familiarization.
Peace ...

Edit: But stop, there is one big difference. Excel is MS(proprietary), and LO is ODF(ISO)

I didn't say I LIKE it more. I don't.  If anything, I like older (menu type) interface in L.O.better. L.O. is perfectly enough for what I do, writing and calc wise..
One problem (not primary) is that Office add-ons by third parties don't work. Second (primary) is that is most of the people that I work with use MS Office. So they send me Word files that fall apart and Excel files that doesn't work all the time, and if I send them something it doesn't work for them. Then I have to be IT support for them and waste time on that too. That's it. Not even my choice, other made it for me.

Regards,
 
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Offline hwj-d

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Re: What's your favorite calculator?
« Reply #58 on: August 14, 2019, 08:11:16 am »
I didn't say I LIKE it more. I don't.  If anything, I like older (menu type) interface in L.O.better. L.O. is perfectly enough for what I do, writing and calc wise..
One problem (not primary) is that Office add-ons by third parties don't work. Second (primary) is that is most of the people that I work with use MS Office. So they send me Word files that fall apart and Excel files that doesn't work all the time, and if I send them something it doesn't work for them. Then I have to be IT support for them and waste time on that too. That's it. Not even my choice, other made it for me.

Regards,
Yeah that's the trick of ms. And I'm principally not involved in that. Fortunately, I don't have an employer who forces me to that.
Thanks  :)
 

Offline mgscheue

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Re: What's your favorite calculator?
« Reply #59 on: August 14, 2019, 02:37:10 pm »
HP-15C.
 

Offline Nominal Animal

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Re: What's your favorite calculator?
« Reply #60 on: August 14, 2019, 04:57:52 pm »
awk.

No, seriously.  I even have a bin/c script I use all the time,
Code: [Select]
#!/bin/sh
exec awk 'function choose(n, k) { choose_r = 1; for (choose_i = 1; choose_i <= k; choose_i++) choose_r *= (n - choose_i + 1) / choose_i; return choose_r }
          function asin(arg) { return atan2(arg, sqrt(1.0 - arg*arg)) }
          function acos(arg) { return atan2(sqrt(1.0 - arg*arg), arg) }
          function atan(arg) { return atan2(arg, 1.0) }
          function tan(arg) { return sin(arg)/cos(arg) }
          function abs(arg) { if (arg < 0.0) return -arg; if (arg > 0.0) return arg; return 0 }
          function fact(n) { fact_r = 1; for (fact_i = 1; fact_i <= n; fact_i++) fact_r *= fact_i; return fact_r }
          function log10(x) { return log(x)/log(10) }
          function log2(x) { return log(x)/log(2) }
          BEGIN { Pi = PI = pi = 3.14159265358979323846 ; deg = pi/180 ; s = sprintf("%.16f", ('"$*"')); sub(/00*$/, "", s); sub(/\.$/, "", s); printf "%s\n", s }'
and for anything iterative, I often reach for awk 'BEGIN { ... }' .  I also have a few dozen manipulator scripts and programs doing range math, IEEE-754 conversions, et cetera.

For symbolic math, I use Maple or SageMath.
 
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Offline bd139

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Re: What's your favorite calculator?
« Reply #61 on: August 14, 2019, 05:04:56 pm »
Just because you can doesn’t mean you should  :-DD
 

Offline Nominal Animal

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Re: What's your favorite calculator?
« Reply #62 on: August 14, 2019, 05:25:00 pm »
Just because you can doesn’t mean you should  :-DD
You mock me! How dare you! :scared:

No, it's just that in my typical workflow, whenever I need a quick math answer, I always have a couple of terminals already open, and it's just faster to run a script, than fire up a proper calculator GUI.  Plus, if I forget, it'll still be in my command buffer (~/.bash_history).  It's all about being lazy, and getting a reliable answer with the least amount of effort spent.

My second most favourite calculator is a piece of paper.  I don't like doing math in my head at all, but doing it on paper is fine for me.  It's like doodling on paper when I'm thinking.

Just recently I was thinking about kids having difficulty motivating themselves to remember e.g. multiplication tables or fractional multiplication in your head (like price × (1 - 0.25) for 25% off).  I thought how one wouldn't want to walk around in a store looking at your phone, tapping on it, just to understand the prices around you.  Then, I remembered that that's exactly what the kids do nowadays anyway..  :-//
 

Offline bd139

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Re: What's your favorite calculator?
« Reply #63 on: August 14, 2019, 05:59:40 pm »
 :-DD I’m being a hypocrite there really as I use “dc” and awk regularly ;)
 

Offline Daruosha

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Re: What's your favorite calculator?
« Reply #64 on: August 14, 2019, 06:09:53 pm »
No love for Casio ClassPad series? I know a lot of folks here hate those things, but I love my CP400 and CG50 combo.
(Yeah, yeah, queue the hate comments  :D )
 

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Re: What's your favorite calculator?
« Reply #65 on: August 14, 2019, 06:12:33 pm »
Theyre better than a TI nSpire!
 

Offline hwj-d

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Re: What's your favorite calculator?
« Reply #66 on: August 16, 2019, 09:09:57 pm »
...
I thought how one wouldn't want to walk around in a store looking at your phone, tapping on it, just to understand the prices around you.  Then, I remembered that that's exactly what the kids do nowadays anyway..  :-//
"Smartphone smartphone in my hand, who is nicest in the land?!" ::)
 

Offline MarkF

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Re: What's your favorite calculator?
« Reply #67 on: August 16, 2019, 09:51:18 pm »
 

Offline VK3DRB

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Re: What's your favorite calculator?
« Reply #68 on: August 17, 2019, 08:45:44 am »
excel
It's a beauty, does all kinds of engineering stuff.

Until you find all the issues/bugs in it.  Open/LibreOffice Calc is a lot better

YESSS   :-+
 
(but go for LibreOffice)

Except Excel has one BIG advantage over other spreadheet programs. In Excel you can plot a graph and get it to assign a nth order equation to it. This is very useful when you want to make an equation to programmatically derive the temperature from a table published by a thermistor vendor. The equation in an embedded micro can sometimes be better and more accurate than using a lookup table. Using an equation works fabulously with Labview or C/C++/C# on a PC. I know you can also use Matlab to get an equation. Try and do that with OpenOffice or LibreOffice Calc!
 

Offline hwj-d

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Re: What's your favorite calculator?
« Reply #69 on: August 17, 2019, 10:18:17 am »
excel
It's a beauty, does all kinds of engineering stuff.

Until you find all the issues/bugs in it.  Open/LibreOffice Calc is a lot better

YESSS   :-+
 
(but go for LibreOffice)

Except Excel has one BIG advantage over other spreadheet programs. In Excel you can plot a graph and get it to assign a nth order equation to it. This is very useful when you want to make an equation to programmatically derive the temperature from a table published by a thermistor vendor. The equation in an embedded micro can sometimes be better and more accurate than using a lookup table. Using an equation works fabulously with Labview or C/C++/C# on a PC. I know you can also use Matlab to get an equation. Try and do that with OpenOffice or LibreOffice Calc!

Maybe so. I probably lack the necessary awareness to be lured onto the MS agenda.  :D
(Edit: ... and I'm a MCSE, a couple of years ago)
« Last Edit: August 17, 2019, 10:36:13 am by hwj-d »
 

Offline Black Phoenix

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Re: What's your favorite calculator?
« Reply #70 on: August 30, 2019, 09:20:39 am »
Not favourite calculator but I saw this Image and I wanted to know if any of the users know which brand is that one:



I remember having one like that at home, with a Vacuum Fluorescent Display but i don't remember if it was a HP or a Texas Instruments. Or even if it was other brand, but I remember being exactly like that one.

Unfortunately it wasn't mine, it was my uncle's one and he took it home like 25 years ago. Also I remember that I didn't work, something was broken.
 

Offline bd139

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Re: What's your favorite calculator?
« Reply #71 on: August 30, 2019, 09:40:31 am »
excel
It's a beauty, does all kinds of engineering stuff.

Until you find all the issues/bugs in it.  Open/LibreOffice Calc is a lot better

YESSS   :-+
 
(but go for LibreOffice)

Except Excel has one BIG advantage over other spreadheet programs. In Excel you can plot a graph and get it to assign a nth order equation to it. This is very useful when you want to make an equation to programmatically derive the temperature from a table published by a thermistor vendor. The equation in an embedded micro can sometimes be better and more accurate than using a lookup table. Using an equation works fabulously with Labview or C/C++/C# on a PC. I know you can also use Matlab to get an equation. Try and do that with OpenOffice or LibreOffice Calc!

Sounds like an application for curve fitting. I've done the same thing for power sensor calibration in LibreOffice. It does the usual linear, exponential and polynomial fits. The calibration constants were then cut and pasted right into the AVR code  :-//
 

Online shakalnokturn

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Re: What's your favorite calculator?
« Reply #72 on: August 30, 2019, 11:43:37 am »
I have the same TI-82 (old version) since high-school 25 years ago, my favourite as I know my way around it best. Also have a TI-89 and a couple of new HP48GX's I bought because they were selling cheap at the time (I'd still be making profit if I sold them today), never really got used to using these...
 

Offline SiliconWizard

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Re: What's your favorite calculator?
« Reply #73 on: August 30, 2019, 02:18:48 pm »
Sounds like an application for curve fitting. I've done the same thing for power sensor calibration in LibreOffice. It does the usual linear, exponential and polynomial fits. The calibration constants were then cut and pasted right into the AVR code  :-//

Just use SciDavis for any kind of data representation and/or curve fitting. It's lightweight, open source, cross-platform, exports to many file formats including SVG and EPS...
 

Offline Black Phoenix

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Re: What's your favorite calculator?
« Reply #74 on: August 30, 2019, 04:29:57 pm »
Not favourite calculator but I saw this Image and I wanted to know if any of the users know which brand is that one:

I remember having one like that at home, with a Vacuum Fluorescent Display but i don't remember if it was a HP or a Texas Instruments. Or even if it was other brand, but I remember being exactly like that one.

Unfortunately it wasn't mine, it was my uncle's one and he took it home like 25 years ago. Also I remember that I didn't work, something was broken.

Update about this one: After a lot of search, I found the Model:

Texas Instruments TI-1250
 

Offline Illusionist

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Re: What's your favorite calculator?
« Reply #75 on: August 31, 2019, 06:37:30 pm »
Sharp EL-5100

Me too! I bought mine for college in 1982 I think, in a closing-down sale reduced to £15 from £60.

It worked up until two years ago when I finally gave up on it. The LCD screen was almost unreadable. I actually threw it out only a couple of months ago, with the LCD screen obviously much worse, in a fit of tidying.

Can't say I have a favourite now. I have a few that get used occasionally, but mostly I'll be at the PC so just pull up an on-screen calculator or spreadsheet for whatever I need.
« Last Edit: August 31, 2019, 06:40:23 pm by Illusionist »
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