Thanks again guys.

I feel like I'm wasting your time.....I did mean WP 34s (the reprogrammed HP financial calculator).

Sorry I'm not being precise with my terminology...I probably should have said RPN not RPL (wasn't really aware of the difference but am now).

I'm not that much interested in the programmable side; I just want a calculator that will allow me to do "scientific" calculations without having to stop and think about how to use the calculator, like I could used to do with the "immediate action" calculators I was used to. I tried getting used to the near perfect algebraic type things and I just couldn't adapt that well...I tried RPN (I hope that's the right term) and found it relatively easy to get used to. I think the most important thing for me is that when you want a sin or a log etc...you can hit the key and it does it to what is on the screen (X register) ...I appreciate that the programmable side is important to others but its the entry method when doing calculations that appeals to me...

Having said that with the programmable capability there, I am going to find uses for it.

I have used the android simulator "free42" a fair bit and I can see why people like the HP42S so much...and again I'm just talking about doing calculations not programming e.g. the way it does matrices is just brilliant. I just wish I was aware of the HP42S in the 80s when I was being educated etc....I would have loved using it through A levels and degree etc....

thanks again

## DM42

### Re: DM42

Since we tend to repeat the obvious here: According to many, the HP-42S was the most powerful RPN pocket *calculator* HP ever sold - just lacking I/O for reasons discussed elsewhere. The WP34S tops it's function set but had to rely on HP's ... hmmh ... suboptimal HW while the DM42 relies on extensively tested Free42 and looks like it will feature a rock solid HW when launched officially. If you're not really interested in programming and very advanced math, the WP31S may be your friend - featuring a significantly cleaner UI than the WP34S but based on the same HW. These are about the alternatives you have after the hp-42S unless you want to leave the realm of RPN pocket calculating.Leechpool wrote: ↑Fri Dec 01, 2017 3:44 pmThanks again guys.

I feel like I'm wasting your time.....I did mean WP 34s (the reprogrammed HP financial calculator).

...

I have used the android simulator "free42" a fair bit and I can see why people like the HP42S so much...and again I'm just talking about doing calculations not programming e.g. the way it does matrices is just brilliant.

DM42 SN: 00041 β

HP-35, HP-45, ..., HP-35S, WP 34S, WP 31S, DM16L

**WP 43S running**on this deviceHP-35, HP-45, ..., HP-35S, WP 34S, WP 31S, DM16L

### Re: DM42

Walter,

Thanks for the steer. I had a quick look at the WP31S. The website states that only models with noticeable keyboard issues are available, but it does seem to fit many of my needs...I just need to face the fact that I'm not just getting a calculator to fulfil my needs because I already really have that with the WP34S....I'm buying calculators because they interest me and I like them...help!

Keithdalby,

Thanks for your comment. As I tried to explain, many modern calculators I come across require you to enter SIN 30, in that order, whereas I'm historically used to typing 30 SIN (Casio FX82 type entry, whatever calculator experts want to call it). I had a quick look at various sources and it seems the word "algebraic" is used in a number of entry method descriptions on both sides of the sin 30 / 30 sin divide, so it probably wasn't a good idea to use the word.

Thanks for the steer. I had a quick look at the WP31S. The website states that only models with noticeable keyboard issues are available, but it does seem to fit many of my needs...I just need to face the fact that I'm not just getting a calculator to fulfil my needs because I already really have that with the WP34S....I'm buying calculators because they interest me and I like them...help!

Keithdalby,

Thanks for your comment. As I tried to explain, many modern calculators I come across require you to enter SIN 30, in that order, whereas I'm historically used to typing 30 SIN (Casio FX82 type entry, whatever calculator experts want to call it). I had a quick look at various sources and it seems the word "algebraic" is used in a number of entry method descriptions on both sides of the sin 30 / 30 sin divide, so it probably wasn't a good idea to use the word.

### Re: DM42

If it helps your decision process please note that we are not going to migrate the WP31S or WP34S onto the DM42 HW platform. It simply won't make sense. Instead, we'll pursue the WP43S (as specified for long) as soon as we get the means to do this.Leechpool wrote: ↑Fri Dec 01, 2017 7:08 pmI had a quick look at the WP31S. The website states that only models with noticeable keyboard issues are available, but it does seem to fit many of my needs...I just need to face the fact that I'm not just getting a calculator to fulfil my needs because I already really have that with the WP34S....I'm buying calculators because they interest me and I like them...help!

DM42 SN: 00041 β

HP-35, HP-45, ..., HP-35S, WP 34S, WP 31S, DM16L

**WP 43S running**on this deviceHP-35, HP-45, ..., HP-35S, WP 34S, WP 31S, DM16L

### Re: DM42

Walter, I certainly hope that project comes to fruition. I would definitely get a WP43S if it did. In the mean time, I've ordered a DM42. I'm just too interested not too. I've found a unit conversion programme, as someone earlier pointed out to me, and experimented with it in Thomas Okken's free42; it looks good.

I have tried looking but haven't been able to find a "physical constants" type programme for the HP-42S...perhaps one hasn't been shared because presumably it's relatively easy to create your own, but if someone could point me in the direction of either an actual programme or places to look, I'd appreciate it.

thanks for your help

### Re: DM42

We've put the most important physical constants into the WP34S and WP31S (as well as some astronomical, some mathematical and some for surveying). We will implement about the same set in the WP43S. Beyond these I only know that most modern calculators feature a subset of "physical constants" - although I wouldn't call that a "program". You find the constants we implemented described in the respective manuals.Leechpool wrote: ↑Mon Dec 11, 2017 3:56 pm... I have tried looking but haven't been able to find a "physical constants" type programme for the HP-42S...perhaps one hasn't been shared because presumably it's relatively easy to create your own, but if someone could point me in the direction of either an actual programme or places to look, I'd appreciate it.

thanks for your help

Hope this helps a bit but not so sure about it.

DM42 SN: 00041 β

HP-35, HP-45, ..., HP-35S, WP 34S, WP 31S, DM16L

**WP 43S running**on this deviceHP-35, HP-45, ..., HP-35S, WP 34S, WP 31S, DM16L

### Re: DM42

Absolutely Walter, both calculators have an excellent set of physical constants...I just wondered whether anyone had created a HP-42S programme which provided access to some useful constants, such that I could use it on the DM42...if nothing comes to light, I might even have a go at creating a programme to provide a small subset which I most often use.

### Re: DM42

Did you look through these? http://thomasokken.com/free42/42progs/Leechpool wrote: ↑Mon Dec 11, 2017 5:59 pmAbsolutely Walter, both calculators have an excellent set of physical constants...I just wondered whether anyone had created a HP-42S programme which provided access to some useful constants, such that I could use it on the DM42...if nothing comes to light, I might even have a go at creating a programme to provide a small subset which I most often use.

I think the one named "convert" might be a start. http://thomasokken.com/free42/42progs/Convert.html

Or are you looking more for constants like speed of light, gravitational constant, and Avogadro's number?

### Re: DM42

As far as I've understood, he's looking for these.

DM42 SN: 00041 β

HP-35, HP-45, ..., HP-35S, WP 34S, WP 31S, DM16L

**WP 43S running**on this deviceHP-35, HP-45, ..., HP-35S, WP 34S, WP 31S, DM16L