Most common calculators in the forum?

[cortopar]

35
25 x 2
27
97
34c
41cv x 2
75c
71b x 2
11c
12c x 5
15c
42s
17bII x 4
28s
48sx
48gx
50g x 3
35s x 2
15c LE x 2
30b
30b->34s x 2
Prime

[brickviking]

(05-21-2018 05:40 AM)grsbanks Wrote:  

(03-03-2018 09:20 PM)brickviking Wrote:  I know HP used the 85MS as a model for their HP-10S and 10S+.

Not sure about the 10s but for the 10s+, they didn't use the fx-85MS "as a model", they used the fx-85MS itself. It's a Casio board inside the 10s+.

Casio have sold OEM boards for as long as I can remember. Even full OEM calculators with someone else's label on them.

Ah, okay. The 10s and s+ have several keys swapped around from the FX-82/85MS layout; arrow keys match the 48-family more closely; the x^3, a/b/c, square root and some other keys moved around, so there must have been some work done on the keyboard matrix at least for HP. The only other difference I can see for the 10s+ is a slightly different colour scheme. Under certain lights, I suspect that'll be harder to read the llight blue.

My only experience with the HP-10s was a bad model, as several lines of dots from the top line disappeared, otherwise I would have kept it, and it would have cost me more money to send back to the retailer for a refund.

The laugh is, I'd been prompted to buy the calculator because the listing showed 128kb of memory. Clearly most of that memory wasn't accessible for programming, and indeed the calculator isn't programmable. I have my doubts about whether the 128kb of memory figure was correct, even considering that some memory would have been set aside for statistics variables and regression calculations.

(Post 228)

[grsbanks]

(05-22-2018 03:12 AM)brickviking Wrote:  Ah, okay. The 10s and s+ have several keys swapped around from the FX-82/85MS layout; arrow keys match the 48-family more closely; the x^3, a/b/c, square root and some other keys moved around, so there must have been some work done on the keyboard matrix at least for HP.

They will have got Casio to make a few alterations to the ROM.

But here's one change they didn't get Casio to make (very likely an oversight):

https://www.youtube.com/watch?v=4F873-zbyM8

[brickviking]

(05-22-2018 07:36 AM)grsbanks Wrote:  

(05-22-2018 03:12 AM)brickviking Wrote:  Ah, okay. The 10s and s+ have several keys swapped around from the FX-82/85MS layout; arrow keys match the 48-family more closely; the x^3, a/b/c, square root and some other keys moved around, so there must have been some work done on the keyboard matrix at least for HP.

They will have got Casio to make a few alterations to the ROM.

But here's one change they didn't get Casio to make (very likely an oversight):

https://www.youtube.com/watch?v=4F873-zbyM8

Here's a weird thing. Multiple people indicate that they have that contrast setting on their calculator; either it's hidden (but is working), or it shows up and is working. My FX-82MS doesn't show that contrast setting, nor does hitting the "2" key at the right place trigger a setting for contrast. I'm not sure if they customise them by country. I couldn't exactly say what date I bought it either, just that it was several years after I'd got my 82-TL. The date code on my circuit board says 02094, the main board identifier reads GY313-1, so I'm guessing it's the first revision. Another identifier on the board: HA210314A-2.

Hardware hacking the calculator? Hm. There's four places to put more capacitors, but no capacitors in those positions nor (mostly) lands to solder them to.

At least this post should probably have been in "Not Remotely HP", due to its drift from the original subject of "most common calculator". Let's get it somewhat back on track.

Currently in NZ, the most common calculator in a kid's home will either be some variant of FX-82 such as the ES Plus, AU Plus or descendants thereof, or if they're in the last years of their schooling, it would be the 9750gII. After they finish school, you can often find their calculators on Trademe (a NZ-based auction site) for much less than the new calculator was originally bought for. I picked up my gII in just this way, as I really really didn't want to pay the new price of $154.95 (NZ dollars).

(Post 230)

[gcmrtin1]

I've owned many since the 1970s, but here's my current collection:

HP Prime
HP 50G
HP 48GX (purchased 1992)
HP 39G
HP 30b
HP 20b
HP 19BII x2 with backdoor (purchased one in 2000)
HP 18C
HP 17bII+
HP 17BII
HP 17B
HP 10b
HP 10bII+
HP 14B 50th
HP 12C (purchased 1985)
HP 12C 30th
HP 12C 25th
HP 45 (father purchased 1974)
TI Nspire CAS CX

Palmtops with Calculator Emulators
HP OmniGo 100 with 12C
HP 200LX with 19BII enhanced functionality

82240B Thermal IR Printer

[wyatt8740]

28S x 1
48SX x 1
That is all. I feel like a big fat phony 'enthusiast,' but as a student I can't really afford to start buying up all of the more expensive models.
The 28S and 48SX appear to be some of the cheapest old HP calcs around, and I really like the 28S form factor in particular.
I especially can't afford to buy more calculators after my car (a Volvo 240) got crunched and I had to foot the bill to fix it (hit and run).

(I also have a TI-89 titanium and some old four-function casio from the 80s that I can't remember the model number of)

[marcel_911]

HP12C x 3 (Original 1982 + 2 x Singapore)
HP12C Platinum
HP16C
HP50g
HP30b

TI30 Galaxy

[edryer]

Not many, but use daily as tools.

HP-16C (1985 manufactured) and a DM-16CC as a backup, actually ordered a DM-16L from a used store but they sent me the CC (Credit card version) and as it was only 30 Euros used I kept it, but quite hard to use daily, so sticking with the 16C.

[pinkman]

HP :
12C
15C
17BII+
35S
49G+
Prime

TI :
89

[Robert VM]

(03-03-2018 05:23 AM)Gerson W. Barbosa Wrote:  Reminds me of a book I read in the original Portuguese when I was 14. Quoting from The Man Who Counted:

Thanks for mentioning, looks like a great book!

[cdmackay]

as per my sig; thanks.

[Jlouis]

(05-28-2018 04:15 AM)wyatt8740 Wrote:  28S x 1
48SX x 1
That is all. I feel like a big fat phony 'enthusiast,' but as a student I can't really afford to start buying up all of the more expensive models.
The 28S and 48SX appear to be some of the cheapest old HP calcs around, and I really like the 28S form factor in particular.
I especially can't afford to buy more calculators after my car (a Volvo 240) got crunched and I had to foot the bill to fix it (hit and run).

(I also have a TI-89 titanium and some old four-function casio from the 80s that I can't remember the model number of)

I agree with you, the 28c/s have a very elegant and usefull form factor. I really enjoy them. When I use them in a public place, many people look at them and some start a conversation about them.

As for the TI 89 titaneum, you are correct in not counting it in your collection. I have one that is very useful as a paper weight or a door stop.

Cheers

JL

[ijabbott]

(11-17-2018 02:58 AM)Jlouis Wrote:  

(05-28-2018 04:15 AM)wyatt8740 Wrote:  (I also have a TI-89 titanium and some old four-function casio from the 80s that I can't remember the model number of)

As for the TI 89 titaneum, you are correct in not counting it in your collection. I have one that is very useful as a paper weight or a door stop.

Wouldn't a calculator with more of a wedge shape be better as a door stop? Say, a HP-41C?

[grsbanks]

(11-17-2018 10:29 AM)ijabbott Wrote:  Wouldn't a calculator with more of a wedge shape be better as a door stop? Say, a HP-41C?

Heresy!!!

[ijabbott]

(11-17-2018 11:06 AM)grsbanks Wrote:  

(11-17-2018 10:29 AM)ijabbott Wrote:  Wouldn't a calculator with more of a wedge shape be better as a door stop? Say, a HP-41C?

Heresy!!!

OK then, a TI-30.

And a TI Voyage 200 makes a decent paperweight (and a decent calculator at the same time!).

[Maximilian Hohmann]

(11-17-2018 11:56 AM)ijabbott Wrote:  And a TI Voyage 200 makes a decent paperweight (and a decent calculator at the same time!).

Exactly! A true multi-purpose machine :-)

And, I hardly dare say that on this forum, if I had to go back to university now I personally would take a Ti89 or Voyage200 rather than any calculator made by HP after 1980.

And to complete this survey (and contribute to the statistics...) since I last answered this thread I have accumulated, among others, the following calculators:
HP-27
HP27s
Elorg 51
HP-41CV (yet another one)
Ti59 (yet another one)
Cateck Magic Keyboard and Calculator (very stylish and hard to find bluetooth keypad with large 12-digit display - but four functions only.)
Canon F-61
Canon F-71
HP-25C (yet another one)
2xTamaya/Riefler Planix 7P (a digital planimeter, but it can be used as a standalone printing calculator and therefore counts as one in my eyes. This, by the way, would be the ideal paperweight/doorstopper!)
Commodore N60 (my second one)

Regards
Max

[JMBaillard]

Hi !
HP41CX
HP48GX
HP50G
WP34S
Free42
Have a great weekend.

[Roland57]

Hi !

My collection:

Hp35 2.Gen
Hp35 3.Gen
Hp35 4. Gen
Hp80
Hp45
Hp55
2x hp65
Hp70
hp67 (with sin-1(o.000003) error)
Hp67 without sin-1 error
Hp91
Hp92
hp97 old PCB and with sin-1 error
Hp97 new PCB prepared for S-version, without sin-1 error

Hp21, 22, 25C, 27, 29C
Hp19C

2x Hp10C,
Hp11C,
Hp12C,
Hp12C Platinum 25th Anniv. Edition
Hp12C 30th Anniv. Edition
Hp15C,
Hp15C Limited Edition
Hp16C

Hp14B 50th Anniv. Edition
Hp32S 50th Anniv. Edition
Hp32SII

Hp18C
Hp19BII
2x hp28S

Hp48SX
2x hp48GX
Hp50
HpPrime (1.Gen)

2x hp71 (1BBBB)
2x hp85A
Hp9100B

Roland

[John Keith]

Welcome to the Forum, Roland- very impressive collection!

[morex]

Hello.
This is my collection:

Hewlett-Packard 10C
Hewlett-Packard 11C x 2
Hewlett-Packard 12C x 2
Hewlett-Packard 15C (bought new 1984)
Hewlett-Packard 16C
Hewlett-Packard 28C
Hewlett-Packard 28S
Hewlett-Packard 32S
Hewlett-Packard 32SII (bought new 2000)
Hewlett-Packard 33C
Hewlett-Packard 41C
Hewlett-Packard 41CV (bought new 1985, not working)
Hewlett-Packard 41CX (bought new 1986)
Hewlett-Packard 42S x 2
Hewlett-Packard 48G
Hewlett-Packard 48SX (not working)
Hewlett-Packard 97
Hewlett-Packard 100LX

Casio 8E
Casio FC-100 x 2
Casio fx-10
Casio fx-19
Casio fx-29
Casio fx-39
Casio fx-120
Casio fx-140
Casio FX-602P (bought new 1983)
Casio FX-720P
Casio Memory-10GT
Casio Mini CM-602
Casio Mini CM-604
Casio PB-700
Casio personal-I
Casio pocket-mini

Intelect (Nixie Tubes)
Microcifra 10 (RPN) x 2
Sanyo ICC-808D
Texas Instruments TI-2550
Some other old 4 op. calculators