The REC is Windows software that lets you choose between 7 different calculators
at the Click of your mouse, and 15 discrete calculators for the more complex functions
plus you can write your own programs to solve your most elaborate equations.
This RPN Calculator offers a choice of more than 280 solutions and thousands of conversion
possibilities with nine unique keypads. A "Tip of the Day" is displayed when you
start the program (it can be turned off), It has a complete help system and individual
tips for all but the most ordinary functions. The calculator has a Running Tape Display
showing all entries and solutions for each session as well as the operation just
performed (+, ÷, etc.), or the units (Hz, °, Hy, etc.) of the result.
You can choose between fixed point, scientific, and engineering notation, and select
degrees, radians, or grads as the situation requires. Keyboard entry is optional
for most of the common functions.
You are able to save the contents of the calculator, the Running Tape Display, the
Register Stack, all necessary data required to be able to take up where you left
off prior to saving. You can print the contents of the Running Tape Display and you
can double-click on any number in the Running Tape Display or the Stack Display to
copy it to the x-register.
The RPN Engineering Calculator™ uses an entry register (input window), a working
register, referred to as the x-register (x-reg) and a holding register, referred
to as the y-register (y-reg), an almost unlimited stack, and 24 storage registers.
Following are links to short descriptions of the available functions on each of the
nine keypads, Click on the link to view the description.
The Convert Keypad consists of many different conversions, there is also a Physical
Constants ('K') function and a ('val') function that calculates the value of Resistors,
Capacitors, and Inductors, based on the color or numeric code on the component.
The final RPN Engineering Calculator™ keypad, the Tables Keypad calculates and lists
information about various hardware and other useful information.
Some of the functions available while in most keypads are: (Click the thumbnail to
see a full size view of the calculator, use your web browser's Back button to return
View lets you toggle between the standard interface (shown at the right) and the
enhanced view, Click for more information. Two other views are available, one that
lets you view just the y-register and the other that lets you view the lastx register.
Drop - deletes the current value in the x-reg, placing it in the last x register,
and Drops the number in the y-register down into the x-register.
x<>y - exchanges the values in the x and y registers.
Lastx - retrieves the last number that was used in a calculation.
REG - is used to save and recall numbers in the Memory Array, 24 memory registers.
CHS - changes the sign of the mantissa or exponent of the number being entered. (This
function is replaced by the Mod function in the Binary Keypad).
EEX - to enter number multiplied by the power of 10.
There are many functions that can be accessed using the keyboard, click to see a
handy, printable table.
The Cursor keys offer different methods of changing the active Keypad.
Unzip the files to a convenient location, read the readme.txt file, then run RECsetup.exe
to load the files required to run rpn.exe.
You are free to use the calculator for 30 days, after that you are required to register
it for $59.95 (US), at which time you will be given a registration number which is
required to keep using this RPN Calculator.
Download/View the REC Programming Language Manual
Download Adobe Reader
Applying the Registration number
To enter the registration number, from within RPN, Click File, Enter Registration
Code, then enter your registration number in the place provided.
When upgrading from any version 6.x or lower please uninstall RPN and download the
latest version above prior to applying the registration. Note your old registration
number will not work, you will need to purchase a new one.