iPhone app 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 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-45s 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

Thousands 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 CuVe 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 Ive used.
Ive bought others but keep coming back to this App.
Its photorealistic, the LEDs appear the way the real ones do, and the buttons almost give the same satisfying feedback of the real thing.`,

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