VINNY RPN CALCULATOR 2022-1

INTRODUCTION
 Vinny RPN Calculator 2022-1 is a FREE app for science and engineering 
 students. It uses Reverse Polish Notation. It temporarily converts the
 computer's numeric keys into an RPN calculator. It allows direct use
 of the computer numeric keys and math keys [ +,-,*,/ ]. The values can
 be input in decimal or exponential format. The main menu item [Hide Trig]
 Shows & Hides the Trig & Log functions. The mouse activates them.  In 
 order to facilitate [Copy] and [Paste] to other apps, Vinny RPN stays on
 TOP and is therefore always visible. The [Help] menu item toggles the 
 help window between open and close.
  
  T: [T] register (top) display only.
  Z: [Z] register display only.
  Y: [Y] register display only.
  X: [X] register working register.

CALCULATOR OPERATION
 The app [Enter] button or the computer [Enter] key is one of the ways
 to complete [X] register data entry but it is not always required. When
 used it will duplicate the [X] value into the [Y] register and RAISE the
 the stack one notch. Note the value in the [T] register is lost. 

 Trig, Log, Power and Root functions operate just on the [X] register and 
 do not affect the stack. These functions will complete [X] data entry.

 Dual functions use both [X] & [Y] register in their calculations. 
 These include [+,-,*,/], [Y^X] and [Delta %]. Each dual function will 
 LOWER the stack one notch and duplicate the [T] value in the [Z] register.
 The calculation result is displayed in the [X] register.
 
COMPUTER KEYS
 Number keys enter numerical digits.
 Keyboard functions [+,-,*,/] do simple math on [X] & [Y] values.
 
 [Enter] key duplicates [X] value in [Y] & raises the stack one notch.
 [Up/Down] cursor keys rolls the stack up or down one notch.
 
 [PageUp] key toggles exponential format and the +/- sign of the exponent.
 [PageDown] key toggles the +/- sign of the exponential mantissa.

 [Home] key reformats the "X" display's decimal point location and exponent.
 [End] key interchanges the [X] and [Y] register values.
 
DATA MOVEMENT
 The [X<>Y] button and the computer [Home] key both interchange the
 values in the [X] and [Y] registers. The down roll [R] button rolls
 the [X,Y,Z,T] stack down on notch. The computer [Up or Down] cursor
 keys respectively roll the stack up or down one notch. 

DATA FORMAT 
 The main menu item [Set Decimal] opens a dialog box for setting the 
 number of digits displayed after the decimal point. To activate the
 setting and to close the dialog box use the Computer [Enter] key
 or just click on the [Set Decimal] menu item again. Use [PgUp] key
 or [E+/-] button to enter exponential format and to change exponent
 sign. 
 
RPN FUNCTIONS:
 [1/X],[Y^x]
 [sqr(X)], [X^2]
 [sin], [cos], [tan]
 [asin], [acos], [atan]
 [log], [10^x]
 [ln], [e^x]
 [Trig] & [Log] Buttons act on [X] register value.
 Click the red [Degrees/Radians] label to switch Trig units.
 [rad>deg]  => Convert [X] value from rad to deg.
 [deg>rad]  => Convert [X] value from deg to rad.
 Delta % between [X] and [Y] { X = 100% * (X-Y)/Y }.
  
OUTPUT
 Displays all four registers [ X, Y, Z, T ]. 
 [STO] and [RCL], to and from the [X] register.
 [Copy] and [Paste], [X] to and from the Windows clipboard.
 
FILES IN THE ZIP PACKAGE
 1-[Vinny RPN 2022 ReadMe.txt]  => This file.
 2-[Vinny RPN 2022 install.exe] => Installs Program files.

PROGRAM FILES
 1-[Vinny RPN 2022 ReadMe.txt] => Program readMe file.
 2-[RPN1.exe] => Main program executable file 100% scale.
 3-[RPN2.exe] => Main program executable file 125% scale.
 4-[RPN1.fig] => Program configuration file for RPN1.exe.
 5-[RPN2.fig] => Program configuration file for RPN2.exe.
 6-[uninstall.exe] => Program uninstalll all files.
 7-[Install_Log.txt] => List of program installs and uninstalls. 

UPGRADE HISTORY
 Version 2022 New
 Update  2022-1 adds [Set Decimal]; adds "Stay on TOP" feature;
                adds [Hide Trig] main menu item.
***************************************************************   
ABOUT THE AUTHOR
 The author is a retired engineer. He lives in Arlington, MA. 
 If you have any questions or comments, contact him at the 
 email address below.  

EMAIL ADDRESS:
 vsansevero@gmail.com