About RPN-38 CX
RPN-38 CX is the first photo-realistic simulation of Hewlett-Packard's popular high-end programmable business calculator HP-38C for the iPhone. Produced from 1979 through 1983, it was the "Chive" member of the...
RPN-38 CX is the first photo-realistic simulation of Hewlett-Packard's popular high-end programmable business calculator HP-38C for the iPhone. Produced from 1979 through 1983, it was the "Chive" member of the third-generation HP calculators known as the "Spice" series.
While the simulator works like the original calculator, a number of carefully designed extensions make it a lot easier to use.
RPN-38 CX is fully compatible with the HP-12C, except for calculations and programs involving Bonds and Depreciation.
Features:
• Photo-realistic look-and-feel
• Programmable (99 steps, program memory not shared with register memory)
• Subroutines, flags, loop control, extended conditional branching
• Insert and delete steps with automatic address correction
• 20 registers, "continuous", with unlimited store/recall arithmetic
• Indirect register addressing
• Register view
• Program listing view
• Program library view
• Additional functions (nominal and effective interest rate)
• Shortcuts for often-used key combinations
• Store and retrieve any number of programs
• Sharing: e-mail, AirDrop, Dropbox, copy, paste, print
• 40 programs pre-installed
Calculator functions:
• Percentage (%, ∆%, %Total)
• Simple and Compound Interest
• Optional odd periods (like HP-12)
• Nominal/Effective interest rate conversion
• Amortization
• Discounted Cash Flow Analysis
• Net Present Value, Internal Rate of Return
• Date and Calendar (actual or 30/360 day basis)
• Statistics (mean, weighted mean, standard deviation)
• Linear Regression
• Additional functions not found on the HP-38:
- Subroutines, flags, loop control, random number, Pi, Log, x² and more
Details: cuveesoft.ch/rpn38
Jan 15, 2024
Version 3.8
• Internal optimizations and cleanups.
• Modified info screen to avoid clipping by the Dynamic Island.
Previous Versions
Here you can find the changelog of RPN-38 CX since it was posted on our website on 2016-10-04 05:29:43.
The latest version is 3.8 and it was updated on 2024-04-19 19:16:52. See below the changes in each version.
RPN-38 CX version 3.8
Updated At: 2024-01-15
Changes: Jan 15, 2024
Version 3.8
• Internal optimizations and cleanups.
• Modified info screen to avoid clipping by the Dynamic Island.
RPN-38 CX version 3.7
Updated At: 2023-12-23
Changes: Dec 23, 2023
Version 3.7
• Runs on Apple Silicon Macs (see notes on homepage cuveesoft.ch)
• RPN-38 CX requires iOS 12.0 or later
RPN-38 CX version 3.6.1
Updated At: 2022-10-09
Changes: Oct 9, 2022
Version 3.6.1
• Fixes a crash when trying to Export a program
RPN-38 CX version 3.5
Updated At: 2022-04-09
Changes: Apr 9, 2022 Version 3.5
• Change the program listing font with a simple tap on the new button "F"
• Apply a filter to quickly find any program.
• Sample Programs may be hidden in the list of programs.
Bug fix:
• IRR and NPV cash flow calculations produced incorrect results if the group count of the initial investment CF0 was larger than 1.
RPN-38 CX version 3.4
Updated At: 2020-12-15
Changes: Dec 15, 2020 Version 3.4
• Improved solving for interest handles extreme cases without iteration error
• Address LASTx indirectly via RCi and STi by treating it as register 20
• When executed interactively, ISG and DSE do not change the program counter
• CLEAR FIN clears the Compound Interest indicator only when "Use Odd Periods" is off
Bug fixes:
• Deleting a block of program steps could result in wrongly adjusted branch targets in some cases
• ISG/DSE commands were susceptible to internal rounding effects
RPN-38 CX version 3.3
Updated At: 2020-11-08
Changes: Nov 8, 2020 Version 3.3
• Print (or mail as PDF) the program or its description
• A program running longer than one minute will emit a short beep when executing the final GTO 00 command
• Tap f or g, then P/R to see a 12- or 24-hour clock.
• Improved accuracy in extreme cases of y^x with positive, integer x.
For example, 1.0000001^(2^27) = 674530.4707, not 674530.4760
• New or updated programs: "Trigonometrics", "Gamma Function (Spouge)"
• Call up "What's New" anytime from Info screen
• Compatibility with iPhone 12
Bug Fixes:
• Fixed display issues when using the iPhone in "Zoomed" mode
• The RND function didn't work correctly in regions using a comma as decimal point
• Double- or triple-tapping the empty program listing could cause a crash.
• Setting the haptic feedback level didn't check sufficiently for the correct code
RPN-38 CX version 3.2
Updated At: 2020-09-02
Changes: Sep 2, 2020 Version 3.2
• Replaced function π with NOP in top function bar
• π is now "g +"
• NOP instructions show as LBL if targeted by GTO or GSB
• Key flashing may be turned off and on:
- Store 19390101 in R1 to turn off
- Recall 19390101 from R1 to turn on
(Hewlett-Packard Company was founded on Jan 1, 1939)
• Haptic feedback may be turned off and on:
– Store 1939010X in R0 to set amount of feedback
(where X = 0: no feedback, X = 3: maximum feedback)
RPN-38 CX version 3.1
Updated At: 2020-03-20
Changes: Mar 20, 2020 Version 3.1
• Register view shows localized formatted value while number is being entered
Bug fix:
• Using scientific notation could crash the app in some regions, i.e. Australia, Sweden, Slovenia.
RPN-38 CX version 3.1
Updated At: 2020-03-20
Changes: 20 Mar 2020 Version 3.1
• Register view shows localized formatted value while number is being entered
Bug fix:
• Using scientific notation could crash the app in some regions, i.e. Australia, Sweden, Slovenia.
RPN-38 CX version 3.0
Updated At: 2020-01-25
Changes: Jan 25, 2020 Version 3.0
• Support for iOS 13: Dark Mode, file sharing
• Email programs directly from the program list
• Replacing registers by pasting a program into the display is now optional
• Many under-the-hood optimizations
Check out the new Download walk-through on the website (under "Sharing".)
Bug fix:
• Executing the summation command ∑ with a very large argument would cause a crash
RPN-38 CX now requires iOS 11 or later.
Disclaimer
Official App Store Link
We do not host RPN-38 CX on our servers. We did not scan it for viruses, adware, spyware or other type of malware. This app is hosted by Apple and passed their terms and conditions to be listed there. We recommend caution when installing it.
The App Store link for RPN-38 CX is provided to you by apps112.com without any warranties, representations or guarantees of any kind, so access it at your own risk.
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