. You type in an expression in RNP and put ‘p’ at the end.
www.swissmicros.com
This all stainless steel version looks better than the original.While these RPN emulators are great, real RPN calculators with real keys are even better. The Swiss company SwissMicros makes RPN calculators based on a few legendary HP's:
SwissMicros - Product Line
Especially the DM42 is very nice IMHO.
Yes it is an excellent calculator. I have two of them, one at home and one at work. The recently introduced DM32 has more modern hardware including an USB-C connection; also very nice but as calculator I prefer the DM42.I was looking at the available HP-28S and they all show their age. Most notably most of them have the battery access door problem. Given the asking price for units that appear to be functional, and since I want to use it, I don't need a broken down unit as a collectable. The SwissMicros DM-42 a modern version of the HP-42S is $276 USD. This is not much more than the asking price for the originals for sale. It is actually built much better them the original. anodised stainless steel case, Gorilla glass display. it is has a Texas Instrument ARM Cortex-M4F 80 MHz processor and is powered by a coin battery they say is good for at least 3 years. But it retains the IR transmitter to use the HP-82240A/B printer. It has a USB-Micro-B port, to connect with external storage, and download firmware updates. It does not need an internal charger given it's stated battery life. Talk about a gift to give to a student going off to engineering school, he can have that smug look when someone asks where the equal button is.
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OMG that is so true - there are so many people here with pretty much every possible tech experience and fascination. And almost all of them are incredibly awesome.
I think I have this exact model sitting on my desk at work, I will check tomorrow ... great Calculator
The Hewlett-Packard HP-35 when it was introduced in 1973 it was a total game changer. It single handedly ended the 342 year reign of the slide rule calculator. I remember it so well, in 1972 in the College bookstore I was looking longingly at slide rules I could not afford. Suddenly here was a Hewlett-Packard HP-35 calculator. it did log, and antilog functions, we didn't have to carry around log and antilog tables anymore. I remember muttering 9 significant digits, 9 significant digits, 9 significant digits. The 1973 HP-35 sold for $395 USD. I remember the envy we felt looking at the engineering students who could afford them walking around with their HP's in leather cases on their belts. The fact they used Reverse Polish Notation was mathematical manna from heaven. By 1980 Slide Rules had all but disappeared.
In the App store all of the classic HP calculators are available. I have all of them loaded most of these were calculators I could never afford. My favorite and the one I mostly use is the HP-45 SD. Interestingly the iPhone 14 ProMax is just about the same size as the actual HP-45. By Emulation these calculators function exactly like the original.
RPN Simulators for iOS Devices
RPN Simulators - Simulations of Hewlett-Packard Calculators for iOScuveesoft.ch
This is a screen shot off of my iPhone 14 Pro Max/
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Just a little thank you for using – and even recommending – RPN-45 SD. I created the app back in 2012, one year after the iPad version. For users who don‘t care about the extra functions, there‘s a version called Vintage-45 which only adds a few additional conversions on keys 1 to 6. All models support the „secret” clock, activated by RCL ENTER.The Hewlett-Packard HP-35 when it was introduced in 1973 it was a total game changer. It single handedly ended the 342 year reign of the slide rule calculator. I remember it so well, in 1972 in the College bookstore I was looking longingly at slide rules I could not afford. Suddenly here was a Hewlett-Packard HP-35 calculator. it did log, and antilog functions, we didn't have to carry around log and antilog tables anymore. I remember muttering 9 significant digits, 9 significant digits, 9 significant digits. The 1973 HP-35 sold for $395 USD. I remember the envy we felt looking at the engineering students who could afford them walking around with their HP's in leather cases on their belts. The fact they used Reverse Polish Notation was mathematical manna from heaven. By 1980 Slide Rules had all but disappeared.
In the App store all of the classic HP calculators are available. I have all of them loaded most of these were calculators I could never afford. My favorite and the one I mostly use is the HP-45 SD. Interestingly the iPhone 14 ProMax is just about the same size as the actual HP-45. By Emulation these calculators function exactly like the original.
RPN Simulators for iOS Devices
RPN Simulators - Simulations of Hewlett-Packard Calculators for iOS
This is a screen shot off of my iPhone 14 Pro Max/
View attachment 2236246
You are so welcome. As I have pointed out the latest Pro Max iPhones are just about the same size as the original calculators. I also very much like your attention to detail in emulating the original even to how they started up. I suppose this is a detail not many now would pick up on but I sure remember it. People today do not realize the gigantic impact these little machines had on the computational engineering world.
I now have an Apple Watch and an HP-01 emulator would be a gift from the Math God to us old RPN pilots. I have an Ultra 2. As I said above we had heard about the HP-01 seen pictures of it in the magazines, but we never actually saw one.
That's a great article. I look forward to reading it in detail. The few bits I've scanned through just show the incredible attention to detail HP used to have. Hard to believe the current HP comes from the same stock.
I was looking at them on eBay $6000 bucks. I just cannot see paying that much. A vintage working Rolax, Heuer, or a Breitling have that kind of value in the horigraphical world but a HP-01 is not considered worth their time and not their money.
I knew HP engineers and a Physicist the worked at the HP Campus that used to be in Loveland, Colorado. I have a lot of inside knowledge of the inner workings at that campus. I remember, and actually briefly used, a 1983 HP-150 desktop Touch Screen computer. I was told the HP wanted to use "let your Fingers to the Walking" but that logo was owned by Yellow Pages. How it worked with a CRT monitor was interesting, the bezel had IR LEDs arranged around the edge with photo sensors to sense were you finger was located on the screen. For it's day it was a very good computer. Sadly HP never recovered from what Carly Fiorina did to it c.2000. Looking at the Apple Watch on my wrist it has many many times then computing power of the HP-150.