About RPN-45 SD
RPN-45 SD is a complete simulation of the scientific hand-held calculator HP-45 from 1973. Powerful enhancements turn the calculator into an amazingly useful tool for the 21st century. Features: • Photo-realistic look base
RPN-45 SD is a complete simulation of the scientific hand-held calculator HP-45 from 1973. Powerful enhancements turn the calculator into an amazingly useful tool for the 21st century.
Features:
• Photo-realistic look based on an existing device
• Original LED display or high-contrast LCD display
• Printer to keep a record of calculations
• Animated keys with adjustable click sound and visual feedback
• Simulation of the HP-45's computation times (may be disabled)
• All functions and operations of the HP-45 fully implemented
• "Secret" stopwatch implemented, extensible from 12 to 100 hours capacity
• Stopwatch may be preset to current time
• Swipe left across display to correct wrong number entries
• Cut/copy/paste of display value
• Tap display to show stack and all memory registers
• Complex numbers may be used in almost all operations
• Non-volatile stack and registers
• 18 storage locations (9 in complex number mode)
• Exponentiation and factorial accept any values (incl. complex)
• Optional hyperbolic functions
• Logarithm to any base (incl. complex)
• Solve linear equations in two or three unknowns
• Solve quadratic and cubic equations
• Normal distribution, Pearson correlation coefficient of paired variables
• Linear regression with estimates
• Weighted mean
• Permutation, Combination (binomial coefficient)
• Integer and fractional part of a number
• Display rounding
• Random numbers in any range, integer or real
• Day of the week of any date between Jan 1, 0001 and Dec 31, 9999
• Easter date for any year between 1583 and 4099
• Support for Julian dates
• Date and day of the week a number of days away (past or future)
• Number of days between any two dates
• Last Stack operation
• Show display value in hexadecimal
• Percentage of sum
• Register arithmetic includes summation registers and LAST x
• Indicators for active prefix keys
• Angular mode indicator
• Localized decimal point
• Thousand's separator
• Clear all registers
• Backup registers in a protected area
Double-tap the display for some basic hints.
Also available for iPad (RPN-45 HD).
For more information, a manual and sample calculations visit the RPN-45 website: cuveesoft.ch/rpn45/en
What users said:
"Have been using HP RPN calculators since HP-35 first came out. The CuVée versions for Apple products are the best emulations by far. I have, and regularly use, them all."
"This app is a great emulator of the classic HP-45 Scientific Calculator, in look, feel and function. It keeps getting better and better with each update."
"This is the most like the real thing that I've used. I've bought others but keep coming back to this App. It's photorealistic, the LEDs appear the way the real ones do, and the buttons almost give the same satisfying feedback of the real thing."
Dec 23, 2023
Version 5.7
• Runs on Apple Silicon Macs (see notes on homepage cuveesoft.ch)
• RPN-45 SD requires iOS 12.0 or later
Previous Versions
Here you can find the changelog of RPN-45 SD since it was posted on our website on 2016-09-28 15:36:45.
The latest version is 5.7 and it was updated on 2024-04-22 08:43:27. See below the changes in each version.
RPN-45 SD version 5.7
Updated At: 2023-12-23
Changes: Dec 23, 2023
Version 5.7
• Runs on Apple Silicon Macs (see notes on homepage cuveesoft.ch)
• RPN-45 SD requires iOS 12.0 or later
RPN-45 SD version 5.6.1
Updated At: 2023-05-12
Changes: May 12, 2023
Version 5.6.1
• Key flashing may be turned on or off in Settings.
• Improved detection of type of cubic equation solutions.
Bug Fix:
• With high-contrast display turned on, complex solutions of cubic equation of type 1 would be shown incorrectly.
RPN-45 SD version 5.6
Updated At: 2022-09-26
Changes: Sep 26, 2022
Version 5.6
• Control haptic feedback:
Select in Settings
-OR-
Store 1939010x in R0 to set the level to x (1..3, 0 for off).
Recall R0 to see the current level.
„Sounds & Haptics“ / „System Haptics“ must be on in the iPhone's settings.
• Store 19390101 in R1 to toggle key-flashing on or off.
(Note: Hewlett-Packard Company was founded on 1939-01-01)
Bug Fix:
• Fixed sound volume not being stored in settings.
RPN-45 SD version 5.5.6
Updated At: 2022-06-09
Changes: Jun 9, 2022 Version 5.5.6
Fixed exponent not being placed at the far right of the high-contrast display in certain cases.
RPN-45 SD version 5.5
Updated At: 2022-02-16
Changes: Feb 16, 2022 Version 5.5
• Improved calendar calculations:
- Date range is Jan 1, 0001 to Dec 31, 9999.
- For any date, the day-of-the-week is shown fully spelled out.
- Enter a date as mm.ddyyyy (US, Canada) or dd.mmyyyy (elsewhere), then execute DATE.
- A positive input is interpreted as Gregorian, a negative input as Julian.
- Convert any date from Gregorian to Julian (and vice versa) by executing DATE.
- Enter an integer n, execute DATE to see the date n days later or earlier than the date in Y.
If the date in Y is invalid, the last valid date is used. (The current date, if none is available.)
Y shows the Julian Day Number of the displayed date.
- If Y = 0:
0 DATE returns the current date.
n DATE returns the Easter date of the year n (n = 1583 to 4099).
j DATE returns the date corresponding to the Julian Day Number j (Gregorian if j is positive, Julian otherwise; j = 1,721,424 to 5,373,484)
- Execute ∆DYS to get the number of days from date Y to date X.
Y shows the result based on the 30 days/month calendar.
RPN-45 SD version 5.4
Updated At: 2020-11-05
Changes: Nov 5, 2020 Version 5.4
• Improved accuracy in extreme cases of y^x with positive, integer x.
For example, 1.0000001^(2^27) = 674530.4707, not 674530.4760
• Compatibility with iPhone 12
Bug Fixes:
• The RND function didn't work correctly in regions using a comma as decimal point
• Fixed display issues when using the iPhone in "Zoomed" mode
RPN-45 SD version 5.4
Updated At: 2020-11-05
Changes: 5 Nov 2020 Version 5.4
• Improved accuracy in extreme cases of y^x with positive, integer x.
For example, 1.0000001^(2^27) = 674530.4707, not 674530.4760
• Compatibility with iPhone 12
Bug Fixes:
• The RND function didn't work correctly in regions using a comma as decimal point
• Fixed display issues when using the iPhone in "Zoomed" mode
RPN-45 SD version 5.3
Updated At: 2020-06-30
Changes: Jun 30, 2020 Version 5.3
• New function ABS (purple-6). Especially useful with complex numbers.
RPN-45 SD version 5.2
Updated At: 2020-04-01
Changes: Apr 1, 2020 Version 5.2
• 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 an Jan 1, 1939)
• Printer mode ALL is now called TRACE, in agreement with other CuVee Software simulators.
• In TRACE mode, the Easter date function is now clearly marked.
(Reminder: set y = 0, x = desired year (1583–4099), and execute DATE.)
RPN-45 SD version 5.1
Updated At: 2020-02-19
Changes: Feb 19, 2020 Version 5.1
• HYP mode may be cancelled by pressing the EEX key again
Bug fix:
• Using scientific notation could crash the app in some regions, i.e. Australia, Sweden.
Disclaimer
Official App Store Link
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