(03-04-2016 01:58 AM)Jlouis Wrote: [ -> ]That's why free42 is so fantastic.
It changes the 42s from portrait to landscape, just turn you smartphone or tablet.
Yes, I've had Free42 on my phone for years, so I'm used to the landscape version of this one. The touch-based interface is so different from using real keys, that I find I can use both landscape and portrait almost equally.
But having never seen a portrait 12C, it's hard to imagine how it feels.
So you don't have one of these, Bob?
And clamshell too!
(03-04-2016 01:55 AM)striegel Wrote: [ -> ]Sorry, I should have included screen captures of the program editor too.
Thanks for posting these Alan - and you're quite right, MUCH more readable.
So I presume these programs are simulating the 12C with new code, rather than emulating one and running the original ROM code? Have you tried some of the problems in the (original) 12C manual to see if the results match?
Wish there was an Android version to check out...
Thanks!
Quite right: these do not use any HP ROM (according to the developer). Running programs produce the same results as a real HP-12C. I've tested the 'Program to Structure Gross Pretax Lease Payments' from page 54 of the HP Leasing Applications Handbook and it matches completely.
(03-04-2016 07:43 AM)Massimo Gnerucci Wrote: [ -> ]So you don't have one of these, Bob?
No, I've held off buying the cheap 12C clones - other than for reasons of being complete (from a collecting viewpoint) I've seen no reason to, but you're right this would be a way to explore a Portrait 12C.
Other than it's cheapness/feel, do you really prefer this over a real 12C?
(03-04-2016 12:02 PM)striegel Wrote: [ -> ]Quite right: these do not use any HP ROM (according to the developer). Running programs produce the same results as a real HP-12C. I've tested the 'Program to Structure Gross Pretax Lease Payments' from page 54 of the HP Leasing Applications Handbook and it matches completely.
What would be a really demanding test case?
For built-in functions, I believe solving for Interest (which is usually iterative) would involve the most internal calculations and thus reveal the propagation of rounding errors (errors meaning compared to a real 12C - it's possible this version is actually more accurate than a native 12C).
You could also build and run some simple programs that calculate in a large loop and compare with a real 12C. Also the ASIN(ACOS(ATAN(TAN(... test could reveal inaccuracies as well.
(03-04-2016 04:05 PM)rprosperi Wrote: [ -> ]... compare with a real 12C. Also the ASIN(ACOS(ATAN(TAN(... test could reveal inaccuracies as well.
But since the HP-12C has no native scientific functions, this would make use of the program, "HP-12C Tried & Tricky Trigonometrics" by Valentin Albillo, right? Sounds like a fun exercise for the weekend.
(03-04-2016 04:05 PM)rprosperi Wrote: [ -> ]... compare with a real 12C. Also the ASIN(ACOS(ATAN(TAN(... test could reveal inaccuracies as well.
But since the HP-12C has no native scientific functions, this would make use of the program, "HP-12C Tried & Tricky Trigonometrics" by Valentin Albillo, right? Sounds like a fun exercise for the weekend.
Alan
Ahem... Yes, why that is exactly what I meant...
No, in truth I clearly just typed that without any thinking, however doing this probably would reveal what you are looking for as this would exercise even more of the inner math modules than simple user functions, as one would use if the machine even had them.
The results should be revealing - and would be surprising to me if results were the same as a native 12C.
After doing this testing, you will also be much more familiar with the new keyboard layout!
Makes me wonder whether we will ever see a certain book and whether it will cover the special problems in opening and refurbishing the diagonal ones...?
(03-05-2016 12:21 AM)Jlouis Wrote: [ -> ]IMHO, the perfect font size stay with the HP48s/g series, (without metakernel), although it is a portrait calculator.
(03-05-2016 12:21 AM)Jlouis Wrote: [ -> ]IMHO, the perfect font size stay with the HP48s/g series, (without metakernel), although it is a portrait calculator.
Nah. Nothing beats the Voyagers of old. IMO.
Ok, but I think they are more or less the same size
Landscape is very nice for two-handed use on a desktop (as I've been discovering with my new DM-41L), but I've never cared for it for handheld use (like with the 12C I keep in my bill basket). So if I had to pick one or the other, I'd go with portrait for versatility, but if the only concern is desktop use, I think landscape has a slight edge.
I like the HP landscape models the way they are, 71, 15, 12, etc. and the portrait, 50, 42, etc the way they are. Not sure about the SwissMicros reordering of portrait keyboards as landscape. Either way, I'll probably buy a couple of 42L's no matter which format they have.
(03-05-2016 01:53 AM)Dave Britten Wrote: [ -> ]Landscape is very nice for two-handed use on a desktop (as I've been discovering with my new DM-41L), but I've never cared for it for handheld use (like with the 12C I keep in my bill basket). So if I had to pick one or the other, I'd go with portrait for versatility, but if the only concern is desktop use, I think landscape has a slight edge.
Dave, as a handheld, just use a landscape calculator like the whole world use a smartphone or tablet for typing: with the two thumbs. You get all versatility that you may want with a landscape.
(03-05-2016 02:01 AM)Dwight Sturrock Wrote: [ -> ]I like the HP landscape models the way they are, 71, 15, 12, etc. and the portrait, 50, 42, etc the way they are. Not sure about the SwissMicros reordering of portrait keyboards as landscape. Either way, I'll probably buy a couple of 42L's no matter which format they have.
1+
By the way, summer is ending, I want my landscape DM42L!!!!
(Don't tell me that I live in the south hemisphere, I don't care)