DM41X RPN Scientific Calculator – Advanced Programmable HP-41CX Upgrade for Engineers, Professionals, and Enthusiasts

This SwissMicos DM41X delivers a solid HP41C/V/X emulation in a sturdy design. The retro eInk power off modes are a nice touch too. Spock inspired me to write this review. The Sputnik CCP Cyrillic texts not so much… but I just imagine they’re written by Ukrainians instead of the other guys.The packaging in cellulose/paper folds and the pleather (PU) slip case are a fine touch.I’ve already programmed my favorite functions from grad school.I feel much better about dropping this sturdy design into my bag than I ever did about my original 41C or 41CV that I now keep safe in desk drawers. Their old plastic is getting brittle with age. I also prefer to use this vs my iPhone, Mac, or PC emulators, since the emulators come with distractions like DMs during keystrokes. This calculator with a textbook page under it reactivates my grey matter.Great job SwissMicros

The HP 41CX, the last iteration of a decade-old handheld computer design, is considered by many to be the summit of Hewlett Packard's calculator legacy. This art-meets-tech is an homage to the 41 CX complete with pre-loaded modules in a modern steel case and display.There is a learning curve, as there was with the original. It may not be your cup of tea, but if you loved the 41 series or are inclined to join a tech cult, this is the price of admission.

The media could not be loaded. Positive: the calculator is very similar in functionality to an HP-41CNegative: 1) the keys have a very cheap feel to them compared to my 41C. 2) battery life seems short. 3) I keep getting a "memory lost" message when I turn it on, which is annoying and I don't understand it. 4) This morning when I tried to turn it on, the screen just flashes and is completely locked up (see video). The reset button did nothing, so I had to unscrew the back and remove the battery. 5) When the battery dies, which is often, you have to reset the time and date before you can use it.Overall: I would gladly pay $350 for a quality HP-41C clone. However, this device is not quality and is almost to the point of being unusable. You're better off getting an HP-41C app on you phone (I really dislike virtual buttons though).Update: it will no longer turn on without the charger plugged in.

Excellent calculator, flimsy LCD. This is the second model I have bought from swiss micros with LCD problems. YOU HAVE to do something about it, guys!

I gave away my old HP 41C calculator with a math pac module back in 1990 to a friend thinking HP would make something better and I should upgrade. Big mistake. They never make another calculator as good. I went through engineering school and got a masters and passed the state engineers exam with it. There is a difference in that there are no plugin ports to insert modules in this one but you go to a menu and "virtually" plug in the Math Pac or others that are preloaded. After this, you just execute the programs using the XEQ button just like the old HP 41C. I forget what the "0" and "2" flags mean at the bottom of the screen but I probably didn't know 40 years ago either.

It was a dark and stormy night somewhere in the world when I decided to call the SwissMicros 24/7 answering machine to get some answers about the HP41CX clone.First, I wanted to know if it has animal places. No, it doesn’t. It has decimal places, quite a few in fact.Does it RIP. Hopefully not, but you use RPN. What about parentheses? Nope (not necessary).Finally, what kind of food processor does it have. Again, none, you will find it has an ARM microprocessor similar to an iPhone.All seriousness aside (as Steve Allen used to say), modern technology allows this clone to have features that were unimaginable when the original HP41CX appeared. For example, the old display has segmented numbers while the new one has a display that is actually a tiny computer monitor, allowing numbers to be mimicked with very fine definition. When the calculator is off, a black and white image is shown, such as a giraffe or ST Enterprise.A word about quality control and manufacturing. The replaceable battery died 2 days after the unit arrived. When I opened the back to replace it I noticed one of two screws that hold the circuit board in place was missing. With care the lone screw should be adequate. So, theDM41X really DESERVES 5 stars, but someone at the factory wasn't paying enough attention to detail.Inserting a new battery is different from the old HP. The new one requires unscrewing two small screws that hold the back cover in place. By the way, the cover of the clone is solid metal not plastic.So, it now sits on my desk, with real keys, ready to use.

I've purchase several of these HP clones and they are well built and operate exactly the same as the original. I am glad they are available since my HPs are getting long in the tooth.