Postfix algebraic scientific calculators still in production

09122018, 05:56 PM
Post: #1




Postfix algebraic scientific calculators still in production
I grew up with Casio scientific calculators in the 70s and 80s and got used to their mode of input. They used an algebraic mode with normal order of operations for binary operators and parentheses to change evaluation order, but functions of one variable used a postfix operation similar to RPN, e.g. "30 SIN" rather than "SIN 30".
The only scientific calculators that work that way I can think of that are still in production are the TI30Xa and TI30 ECO RS. Are there any others? — Ian Abbott 

09122018, 09:11 PM
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RE: Postfix algebraic scientific calculators still in production  
09122018, 09:49 PM
Post: #3




RE: Postfix algebraic scientific calculators still in production
What about the 10BII+? It's even got a few (optionally) postfix twoargument functions by way of the Input key.


09132018, 06:52 AM
Post: #4




RE: Postfix algebraic scientific calculators still in production
(09122018 09:11 PM)Albert Chan Wrote: How about Casio FX 260 solar II ? Thanks, I think I'd already seen that EEVblog video and forgotten about it! I think it is called the fx82 Solar II in Europe. — Ian Abbott 

09132018, 06:58 AM
Post: #5




RE: Postfix algebraic scientific calculators still in production
(09122018 09:49 PM)Dave Britten Wrote: What about the 10BII+? It's even got a few (optionally) postfix twoargument functions by way of the Input key. That's a possibility, but if I got a financial calculator (actually, I do still have an unconverted HP30b), I think I'd prefer the TI BAII Plus or Plus Pro. — Ian Abbott 

09132018, 11:22 AM
Post: #6




RE: Postfix algebraic scientific calculators still in production
(09132018 06:58 AM)ijabbott Wrote:(09122018 09:49 PM)Dave Britten Wrote: What about the 10BII+? It's even got a few (optionally) postfix twoargument functions by way of the Input key. Now that's crazy talk. The BAII Plus features are decent, but it's pretty unpleasant due to two things: no rubber feet (it slides all over your desk), and awful keyboard response with no twokey rollover, that will leave you with missed keystrokes at a very low threshold for "fast typing". The Sharp EL738 models use a very similar "worksheet" UI like the TI, but have absolutely fantastic keys. 

09132018, 07:46 PM
Post: #7




RE: Postfix algebraic scientific calculators still in production
(09132018 11:22 AM)Dave Britten Wrote:(09132018 06:58 AM)ijabbott Wrote: That's a possibility, but if I got a financial calculator (actually, I do still have an unconverted HP30b), I think I'd prefer the TI BAII Plus or Plus Pro. The Professional version has rubber feet, a (partly?) metal case, and 2key rollover, I think, unlike the cheaper version for students. Quote:The Sharp EL738 models use a very similar "worksheet" UI like the TI, but have absolutely fantastic keys. The EL738F even has hyperbolic trig. Nice! — Ian Abbott 

09132018, 09:20 PM
(This post was last modified: 09132018 09:21 PM by Albert Chan.)
Post: #8




RE: Postfix algebraic scientific calculators still in production
(09132018 11:22 AM)Dave Britten Wrote: Now that's crazy talk. The BAII Plus features are decent, but it's pretty unpleasant due to two things: no rubber feet (it slides all over your desk), and awful keyboard response with no twokey rollover, that will leave you with missed keystrokes at a very low threshold for "fast typing". What is twokey rollover ? Why missed keystrokes without it ? Regarding "fast typing", I was once in a customs office, paying taxes. The lady were using a Canon, typing with *all* five fingers on it ! The other hand were writing stuff ... at the same time ! Not once had she even look at the calculator ! When finished the fast typing, just staple the calculator printout ... Amazing 

09132018, 09:39 PM
Post: #9




RE: Postfix algebraic scientific calculators still in production
(09132018 09:20 PM)Albert Chan Wrote:(09132018 11:22 AM)Dave Britten Wrote: Now that's crazy talk. The BAII Plus features are decent, but it's pretty unpleasant due to two things: no rubber feet (it slides all over your desk), and awful keyboard response with no twokey rollover, that will leave you with missed keystrokes at a very low threshold for "fast typing". Some cheap keyboard scanning would miss keys if you’re still pressing the previous one 

09132018, 10:59 PM
(This post was last modified: 09132018 11:03 PM by Gene.)
Post: #10




RE: Postfix algebraic scientific calculators still in production
The HP10BII+ hands down. It has hyperbolic trig FWIW and many features the TI BAII Plus does not have, such as shown below. This is a GREAT machine and the keys are much better than the TI BAII Plus.
Functions on the HP 10bII+ not found on the TI BAII Plus  I think TI should call it the TI BAII Minus. Entry of a number in scientific notation Entry of a number with 12 digits 11 extra storage memories PI Normal distribution Inverse Normal distribution Student’s t distribution Inverse Student’s t distribution Best fit regression choice Exponent regression model Inverse (1/x) regression model Weighted average Gamma function Markup calculations Initial CF0 frequency other than one No CPT (compute) key needed to solve 

09142018, 07:40 AM
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RE: Postfix algebraic scientific calculators still in production
(09132018 09:20 PM)Albert Chan Wrote: Regarding "fast typing", I was once in a customs office, paying taxes. Have you seen this? — Ian Abbott 

09142018, 07:06 PM
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RE: Postfix algebraic scientific calculators still in production
Take away the calculator, you get this ...


09142018, 07:32 PM
(This post was last modified: 09142018 07:34 PM by Zaphod.)
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RE: Postfix algebraic scientific calculators still in production  
09152018, 10:52 AM
Post: #14




RE: Postfix algebraic scientific calculators still in production
(09132018 10:59 PM)Gene Wrote: The HP10BII+ hands down. It has hyperbolic trig FWIW and many features the TI BAII Plus does not have, such as shown below. This is a GREAT machine and the keys are much better than the TI BAII Plus. I can't argue with that, although being picky, the handling of differing payment and compounding periods in TVM calculations is a bit more awkward on the HP 10bII+ compared to the BA II+ Plus. — Ian Abbott 

09152018, 11:02 AM
Post: #15




RE: Postfix algebraic scientific calculators still in production
(09142018 07:06 PM)Albert Chan Wrote: Take away the calculator, you get this ... So who would win in an epic battle between the soroban guy and the calculator girl? I suspect the limiting factor is how fast the announcer can speak the numbers! — Ian Abbott 

09152018, 12:10 PM
Post: #16




RE: Postfix algebraic scientific calculators still in production
(09152018 11:02 AM)ijabbott Wrote: So who would win in an epic battle between the soroban guy and the calculator girl? No contest. Soroban guy win. If you watch the video in full, at the end (7:45) it had a "flashing numbers" contest. 15 3 digits numbers flash on the screen in ... 2 seconds ! There is no time to do any input, abacus or calculator. They had to add them up in the head. I cannot even count the number of flashes ! 

09162018, 09:56 PM
(This post was last modified: 09162018 09:58 PM by brickviking.)
Post: #17




RE: Postfix algebraic scientific calculators still in production
(09152018 12:10 PM)Albert Chan Wrote:(09152018 11:02 AM)ijabbott Wrote: So who would win in an epic battle between the soroban guy and the calculator girl? Counting the number of flashes is easy; however, extending the vstq to 15 items instead of the usual 3–7 items is the real push. I've found that I have a fairly short "veryshorttermqueue" of about 4 items, I can push it to 5 sometimes. In addition, I can't add two numbers (of any size>1) as quickly as they can add fifteen 3digit items. I'm out. (Post 284) Regards, BrickViking HP50g Casio fx9750G+ Casio fx9750GII (SH4a) 

09162018, 11:43 PM
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RE: Postfix algebraic scientific calculators still in production
Hi, brickviking
The beauty of the Soroban way is there is no queue. The numbers were already added when they visualize it as beads. So, no superhuman memory training is needed. 

09192018, 12:55 PM
Post: #19




RE: Postfix algebraic scientific calculators still in production
I think we got them all:
TI30/30 ECO RS Casio fx260 Solar original/II HP 10BII+ I will add: Sharp EL501XBWH (and all the clones found at Right Aid, 99 cent stores, etc) Cannon F605 

09192018, 12:57 PM
(This post was last modified: 09192018 12:58 PM by Eddie W. Shore.)
Post: #20




RE: Postfix algebraic scientific calculators still in production
(09142018 07:40 AM)ijabbott Wrote:(09132018 09:20 PM)Albert Chan Wrote: Regarding "fast typing", I was once in a customs office, paying taxes. Wow! I never seen anyone use a calculator that fast. Future potential soul mates on Earth, being able to use a calculator that is a plus on the list. 

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