+- HP Forums (https://www.hpmuseum.org/forum)
+-- Forum: Not HP Calculators (/forum-7.html)
+--- Forum: Not quite HP Calculators - but related (/forum-8.html)
+--- Thread: DM42 News (/thread-7457.html)
RE: DM42 News - Logan - 12-18-2017 10:11 PM
Excellent, (and a nice way to implement that feature). Thanks!
RE: DM42 News - Gene - 12-18-2017 10:45 PM
Now you guys have me hopeful for a delivery in TN soon. We shall see!
RE: DM42 News - Michael de Estrada - 12-18-2017 10:48 PM
Just received mine in North Texas, SN: 00159. Also, no signature required.
RE: DM42 News - rprosperi - 12-18-2017 11:33 PM
Delivery in NY too!
SN 00282 arrived today via USPS.
Well done Swiss Micros!
RE: DM42 News - Logan - 12-18-2017 11:34 PM
I'm not sure how the serial numbers work here: I ordered two on the same order and receive SN 429 and SN 210 so I don't think they are handing them out sequentially per se
RE: DM42 News - rprosperi - 12-18-2017 11:40 PM
(12-18-2017 11:34 PM)Logan Wrote: I'm not sure how the serial numbers work here: I ordered two on the same order and receive SN 429 and SN 210 so I don't think they are handing them out sequentially per se
Seems unlikely; I finished ordering mine within 2 minutes of "Go" and it seems unlikely 181 others were completed before mine (production unit SN's begin at 100).
Personally, I'm glad they focused more on shipping quickly than processing orders in sequence. Sometimes raw desire beats out OCD...
RE: DM42 News - larthurl - 12-19-2017 12:52 AM
(12-16-2017 01:39 PM)DA74254 Wrote:(12-16-2017 01:28 PM)Bunuel66 Wrote: Got mine yesterday. Very very nice. I have just noticed that one of the key (the most upper left (help)) has a different feeling than the others. Nothing critical if it stays that way. The most surprising is the weight of the calculator ;-)
That said, is there any way to turn the screen totally off? Having a permanent display is nice but its not the safest way to be for a LCD screen: it is much easier to alter a display on than off under inadvertent pressure due to the electric field in the LCD.
Regards to all.
Yes, the weight is impressing and I like it
Regarding the screen; I *think* that if you delete all but the "blank.bmp" in the "OFFIMG" folder you may acheive what you want. You probably have to connect to a PC (and copy/backup everything at the same time) to perform this deletion.
Mine just arrived today. Less than a week from Swiss to NJ. That was fast.
I too am very impressed with the quality and the heft.
Looking forward to using it.
......Art
RE: DM42 News - hth - 12-19-2017 01:14 AM
Shouldn't you wait until Christmas before you open your Christmas gift...?
Håkan
RE: DM42 News - Gene - 12-19-2017 03:12 AM
Mine arrived today in TN, no signature required.
But my wife knew what it was so I can't open it now for a week until Christmas! She is a keeper lol.
RE: DM42 News - CY-CL - 12-19-2017 07:27 AM
who has the lowest serial number???
Mine has 00119
RE: DM42 News - Massimo Gnerucci - 12-19-2017 07:45 AM
(12-19-2017 07:27 AM)CY-CL Wrote: who has the lowest serial number???
Michael.
:)
RE: DM42 News - grsbanks - 12-19-2017 08:07 AM
(12-19-2017 07:27 AM)CY-CL Wrote: who has the lowest serial number???
Mine has 00119
Mine is #00017 -- but then again it is a beta unit that I've had since May
RE: DM42 News - Paul Dale - 12-19-2017 10:25 AM
He who must not be named asked me to post this.
Pauli
(12-19-2017 08:43 AM)emersone12 Wrote:(12-18-2017 11:34 PM)Logan Wrote: I'm not sure how the serial numbers work here: I ordered two on the same order and receive SN 429 and SN 210 so I don't think they are handing them out sequentially per se
If Swiss Micros have only produced an initial batch of 300 production models starting from serial number 100 & then numbering sequentially onwards from SN 100 then theoretically the highest serial number should logically be SN 400. So how can there be SN 429?
Hi emersone12,
Did you ever hear about scrap rate?
RE: DM42 News - grsbanks - 12-19-2017 12:51 PM
I don't think it's scrap rate
What I do know is that the calculators' backs were not ordered by serial number in the package that Michael received with the parts in it. Some discontinuity in numbers sent out is to be expected.
Look at it this way, everyone has a more or less equal chance of getting the lowest serial number that way, not necessarily the first person to order a DM42
RE: DM42 News - zeno333 - 12-19-2017 05:10 PM
(12-19-2017 08:07 AM)grsbanks Wrote:(12-19-2017 07:27 AM)CY-CL Wrote: who has the lowest serial number???
Mine has 00119
Mine is #00017 -- but then again it is a beta unit that I've had since May
Do not get me started on the number 17
RE: DM42 News - Jeff O. - 12-19-2017 06:30 PM
Another unit received in the US only 7 days after ordering. Since it was a Christmas present to myself, I opened it right away :-). Very impressive, looking forward to playing with it over the holidays.
DM42 Integration application - Bunuel66 - 12-19-2017 07:09 PM
I have observed a strange behavior on my DM42. Using the numerical integration application I just checked it for integrating cos(x) from 0 to Pi. As soon as you ask for an accuracy better than 0.1 the time spent for integratingis very long. In fact I have had to sop the integration before end. If you change the domain of integration with such a small quantity as 10^-10 either on zero side or on pi then the convergence is way faster even for a very good accuracy.
I have checked the behavior of Free42 on Windows and Android. The behavior is similar: takes way longer if the domain is exactly 0,Pi. The problem appears only on the decimal version. The binary just works fine. On Windows the integration
ends up slowly but it ends. I’m puzzled. It seems to be related with the use of the decimal library.
If somebody has an idea? Is it a bug or a feature ;-)
Regards
RE: DM42 News - Thomas Okken - 12-19-2017 07:30 PM
(12-19-2017 07:09 PM)Bunuel66 Wrote: I have observed a strange behavior on my DM42. Using the numerical integration application I just checked it for integrating cos(x) from 0 to Pi. As soon as you ask for an accuracy better than 0.1 the time spent for integratingis very long. In fact I have had to sop the integration before end. If you change the domain of integration with such a small quantity as 10^-10 either on zero side or on pi then the convergence is way faster even for a very good accuracy.
I have checked the behavior of Free42 on Windows and Android. The behavior is similar: takes way longer if the domain is exactly 0,Pi. The problem appears only on the decimal version. The binary just works fine. On Windows the integration
ends up slowly but it ends. I’m puzzled. It seems to be related with the use of the decimal library.
If somebody has an idea? Is it a bug or a feature ;-)
Regards
Bug, certainly. Probably in the termination condition.
I'll have to look into that.
RE: DM42 News - Logan - 12-19-2017 07:58 PM
I don't know if this is a bug or not, but on the original HP 42s when using the Alpha entry, you could hold down the shift the entire time and select lowercase characters without letting go. That doesn't seem to be the case with DM42 (or Free42 iOS), where it requires shift for each additional character.
RE: DM42 News - salvomic - 12-19-2017 08:21 PM
(12-19-2017 07:09 PM)Bunuel66 Wrote: ...
I have checked the behavior of Free42 on Windows and Android. The behavior is similar: takes way longer if the domain is exactly 0,Pi. The problem appears only on the decimal version. The binary just works fine. On Windows the integration
ends up slowly but it ends. ...
(12-19-2017 07:30 PM)Thomas Okken Wrote: Bug, certainly. Probably in the termination condition.
I'll have to look into that.
Free42 in iOS 11 (iPhone), after few seconds (about 10-15) with acc. 1E-20 I get -5.731411E-34 (and not 0)