Swiping the LCD left or right performs these operations. Basic scientific functions including hyperbolics.
#Hp rpn scientific calculator 42s software
* Added Undo and Redo functions for the stack. This small but powerful calculator was designed to be software compatible. * Added hi-rez (retinal) key pad image for iPhone 4 * Compatibility with iOS4 including application switching and compatibility bugs * Program mode can now be scrolled with the menu active. * Added option to remove device status bar for a larger LCDĪdded additional lines to LCD modes, now supports up to 6 lines of stack, or 7 lines of program. The calculator had over 600 built-in functions.
It lacked the HP-41C's expandability but it offered, a two-line dot matrix screen with customizable menus, greater speed, smaller size, and a lower price as compensation. * Added DROP command, executed by doube tapping the back key HP-42S HP-42S This small but powerful calculator was designed to be software compatible with the HP-41C. * Added option for no stack lift on Enter. Choose between the traditional (X, Y, Z, T) style stack, or a fully dynamic stack. * Added option for a dynamically sized stack. * Tap LCD in alpha entry mode to toggle the display of the iPhone keyboard. * Display last x register in the upper right hand corner of LCD * Double tap print output view to copy print contents * Sound tones mimic those of the original HP-42S * swipe LCD vertically on the right hand side to roll stack contents, or to scroll a program in program mode. * Double tap LCD to cut and paste one or more numbers from the stack, or paste one or more numbers to the stack * Swipe LCD vertically to get up to 7 lines of display. * Runs several orders of magnitude faster then the original calculator, including program execution, solving, integration, matrix operations, etc. * Use the iPhone keyboard for entering character data, or variable names. * Internally stores values and performs operations in 25 digit decimal precision. Packages are available for additional functionality including Engineering, Scientific, Financial, Statistical, etc. Additionally, several enhancements have been made over the original calculator such as additional precision and the ability to import and export programs. This calculator provides all the functionality of the original 42S with several hundred functions, programability, printer output, etc. There are no ROMs or emulators involved allowing 42s to run natively and fast. Those are to satisfy my geeky side, I love just playing with them and learning what they're about, but for serious use, I've found the HP 15C, HP 35s and DM42 are all much better - though how much of that is simply that those are what I have spent more time on, I can't really answer.42s is an iPhone port of Thomas Okken's excellent and stable Free42, a complete re-implementation of the highly praised HP-42S RPN calculator. I also have a Platinum HP 15C, a HP 12C, which also has been mostly replaced by spreadsheets for my needs, and some other Swiss Micros calculators. I'm really enjoying the power it has, though I mostly baby it with really simple work compared to what it can do. And it helps that I also have Free42 on my phone and desktop for when it is impractical to carry extra gadgets. Since I never used the HP 41 series, I find the 42 to be really nice. I find the keyboard to be as nice, if not nicer, the display is simply outstanding, and the capability is magnificent. However, once I got my DM42, that replaced the HP 35s for everything. Battery door is intact and latches nicely. There is a very small scratch on the screen that is visible from an angle, see picture. The chassis of the calculator has no visible scratches or defects.
This unit appears to have had very little use. Nothing I ever used for heavier calculations, since like the HP 15C, it has no way to import or export programs or data.
Hewlett Packard HP 42S RPN Scientific Calculator. An RPN calculator that feels fantastic to hold and use, that delivers all the functionality you could want, and that is built to last a very long time.
I kept it on my desk when I was doing industrial programming and technical sales for the occasional quick calculation, and it was admirably suited for that. It's really relegated to when I just want to calculate something small, though I often reach for my cellphone and Free42 for that now. The bandwith of the interface is just not there for solving large problems with lots of data, though I used to do that in the early 90's.
However, it has largely been replaced by tools like NumPy and Gnumeric for when I need more complex solutions these days. I started with an HP 15C ages ago, and it remains my handy companion when I am at home and have to do something, or when I work serious math. But since I have several of the calculators in question, I figured my answer might have some use.
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