My Calculator DM42 ist arrived ;-)

Discussion around the Swiss Micros DM42 calculator.
Thomas Okken
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Location: New Jersey, USA
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Re: My Calculator DM42 ist arrived ;-)

Post by Thomas Okken » Sun Dec 17, 2017 8:55 pm

Over_score wrote:
Sun Dec 17, 2017 9:22 am
pyridine wrote:
Sat Dec 16, 2017 2:16 pm
The most annoying part is the pouch, it is so tight I cannot put the calculator back into it... I am using my old HP11C as a nug fit to "loosen" up the pouch...
Same very little issue here...
I used my old HP42S to "loosen" up the pouch and used the 42S pouch for the DM42 in the mean time.
I just made a point of pushing my DM42 into its pouch as far as it would go, and within a few days, it had stretched to fit perfectly.

Bill (Smithville NJ)
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Joined: Sat Jul 22, 2017 7:14 pm

Re: My Calculator DM42 ist arrived ;-)

Post by Bill (Smithville NJ) » Mon Dec 18, 2017 6:38 pm

My DM42 was just delivered by the USPS - no signature required.
The weight is really surprising. Feels very solid.

Now to find some time to play with it.

Ordered on Dec 9, arrived on Dec 18 - fast delivery
from Switzerland to New Jersey.

Bill
Smithville, NJ

Dave Britten
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Joined: Wed Jun 14, 2017 7:27 pm

Re: My Calculator DM42 ist arrived ;-)

Post by Dave Britten » Mon Dec 18, 2017 7:25 pm

Got mine here in MI. Whee!

HPMike
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Joined: Fri Jul 21, 2017 9:01 pm
Location: DFW, Texas

Re: My Calculator DM42 ist arrived ;-)

Post by HPMike » Mon Dec 18, 2017 10:44 pm

Received just now in North Texas, USA, also no signature required. This is much faster than I had expected, especially considering the time of year. Took me about five minutes to extricate it from the pouch. It was already turned on, but that may have been due to my pressing on the bottom of the pouch when I tried to remove it.

When turned off it displays a random graphic, is this normal ? How much extra power does this require ?

It weighs 179 grams compared to 142 grams for my HP 42s.

Serial number is 00159.

The micro USB port is badly misaligned with the hole in the case, but the cable can still be inserted with patience and care.

Overall, this thing is impressive. I’ll check back here when I have more time to spend with it.
DM15L, S/N 00548. DM42, SN: 00159.

rprosperi
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Location: New York

Re: My Calculator DM42 ist arrived ;-)

Post by rprosperi » Mon Dec 18, 2017 11:51 pm

HPMike wrote:
Mon Dec 18, 2017 10:44 pm
When turned off it displays a random graphic, is this normal ? How much extra power does this require ?
The type of LCD used actually uses zero current when the machine is off, despite preserving the appearance of still being "on". Doubters will scoff, but it's been discussed, researched and explored by lots of folks in the beta group that also doubted it.

For those that just don't want to believe, there is a 100% blank Off Image available, included in the OFFIMG folder of the flash drive. If you delete all the other images, the DM42 will only "show" that one, so your screen will always be blank when you power-off (normally, the DM42 cycles among all the images in the OFFIMG folder, showing the next one each time you power-off, and then repeats the list once all have been seen). You can also add your own images: 400x240, 1-bit color (B&W), BMP file format.
--bob p

DM42: β00071 & 00282

AlexFekken
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Joined: Wed Jul 26, 2017 5:58 am

Re: My Calculator DM42 ist arrived ;-)

Post by AlexFekken » Tue Dec 19, 2017 12:26 am

rprosperi wrote:
Mon Dec 18, 2017 11:51 pm
The type of LCD used actually uses zero current when the machine is off, despite preserving the appearance of still being "on". Doubters will scoff, but it's been discussed, researched and explored by lots of folks in the beta group that also doubted it.
But the reference for this that is given elsewhere:
grsbanks wrote: However, the LCD is not switched on when the DM42 is powered down. It is a comparatively new technology of LCD that retains its contents even when switched off:

https://www.sharpsma.com/sharp-memory-lcd-technology
actually says: 50 micro Watt for a static image on a 400x240 display. So who is right?

I hope this doesn't mean that the DM42 will round 50E-6 down to zero :-)

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Mark Hardman
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Location: Houston, TX

Re: My Calculator DM42 ist arrived ;-)

Post by Mark Hardman » Tue Dec 19, 2017 1:37 am

I had my DM11L arrive Saturday; I was ecstatic. My DM42 arrived today; I am euphoric! I must say that the the unit I received is of the highest calibre (it's 00357).

I hear you laughing there grsbanks.

Mark Hardman
Houston, TX
DM42 S/N: 00043 (Beta)
DM42 S/N: 00065 (Beta)
DM42 S/N: 00357

rprosperi
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Location: New York

Re: My Calculator DM42 ist arrived ;-)

Post by rprosperi » Tue Dec 19, 2017 2:56 am

AlexFekken wrote:
Tue Dec 19, 2017 12:26 am
actually says: 50 micro Watt for a static image on a 400x240 display. So who is right?
Oh, I'm sure Sharp is right! Ok, I admit it, I couldn't recall the actual low number and knew this was the easiest way to find out. The amazing thing (to me) is that the very low current it does draw is the same, independent of the image shown (or not shown).

Sorry Alex, but thanks.
--bob p

DM42: β00071 & 00282

tgray
Posts: 12
Joined: Fri Jul 28, 2017 1:36 am

Re: My Calculator DM42 ist arrived ;-)

Post by tgray » Tue Dec 19, 2017 3:16 am

Got mine today. It's great! Loaded some programs from Free42 on my phone and made some OFFIMGs.

The 2 key doesn't quite register each press. Is the recommended method to fix this just exercise the button, or open it for cleaning?

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Walter
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Location: Close to FRA, Germany

Re: My Calculator DM42 ist arrived ;-)

Post by Walter » Tue Dec 19, 2017 5:35 am

rprosperi wrote:
Tue Dec 19, 2017 2:56 am
AlexFekken wrote:
Tue Dec 19, 2017 12:26 am
actually says: 50 micro Watt for a static image on a 400x240 display. So who is right?
Oh, I'm sure Sharp is right! Ok, I admit it, I couldn't recall the actual low number and knew this was the easiest way to find out. The amazing thing (to me) is that the very low current it does draw is the same, independent of the image shown (or not shown).
Now this thing makes sense! I was wondering before about the "new technology" they applied - pondering on some special electric ink although it's called LCD. Thanks for enlightenment. Should look at the manufacturer's website earlier. ;)

How does this compare with the power drawn by good ol'CMOS calculators when switched off (e.g. HP-25C)?
DM42 SN: 00041 --- Follower of Platon.

HP-35, HP-45, ..., HP-50, WP 34S, WP 31S, DM16L

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