Overview
HP 11C General Overview
General Overview:
 The design concept for the HP 11C program was to emulate as much
 as possible the look and feel of the real HP 11C calculator. 
 Almost all of the functions of the real calculator are supported
 with the exception of the Gamma function and the programmability
 which maybe developed in the future.

 Some of the features shared by this program and the real
 calculator are 10 digit display numeric resolution from 0 to
 +-9.999999999E+-99, variable display formats (FIXed, SCIentific,
 ENGineering), trig operations can be performed in DEGrees,
 RADians, or GRADs, 21 data storage registers (R0-R9, R.0-R.9 and
 index register I), HP's unique operating logic (reverse polish)
 that operates with a stack of 4 data registers (X,Y,Z,T with X
 being the display), and constant memory (values retained from end
 of last session to beginning of next) of the stack registers, all
 21 storage registers , last X register, and the display and trig
 modes settings.

 Some features of this program not supported on the real
 calculator are secondary window displays of the 4 stack registers
 and the 20 storage registers.  Click the ON push button for
 access to these secondary windows.  On line help is available by
 clicking the HP 11C logo.  The on line help is not as complete as
 HP's user manual but an effort has been made to describe the
 operation of the functions that are not obvious.  Also note that
 since the on line help uses standard text files you are free to
 modify or add your own on line help information.  See the Help
 tab for additional information on how to customize the on line
 help.

 To reproduce the look of the real calculator, extensive use of
 image push buttons and image boxes has been made.  Since all
 bitmap files are provided the user is free to modify any file if
 he wishes, however, do not change the names of the files or the
 size of the bitmaps, and they must be located it the same
 directory as HP11C.EXE.  While all keys are fully labeled, any
 function that relates exclusively to the programmable environment
 is not currently supported.

 Many of the math and trig functions are enabled via the
 RXMATHFN.DLL which is a copyrighted and licensed program provided
 via IBM's EWS program.  All files supplied with the original
 RXMATHFN.DLL package are provided with HP 11C.  Please read and
 honor the terms of IBM's license.

Notation:
 In referencing the stack registers, capital X, Y, Z, an T will be
 used.  Lower case x and y are used to refer to x and y values as
 rectangular coordinates (rectangular/polar conversions or linear
 regression) or as the data pairs used with the statistical
 functions.

 When reference to a specific calculator key is made its position
 on the keyboard will be noted as (row,column) where row is 1-4
 top to bottom and column is 1-0 left to right.  When a sequence
 of keys are referenced, the sequence will be noted as (row,column
 row,column ...).  The words "key" and "push button" are used
 interchangeable and when click or clicking a key is specified,
 pressing the keyboard shortcut equivalent key will generate the
 same results.

 When clicking keys that does not immediately change the contents
 of the display, a slight blinking of the display confirms
 acceptable key clicks.

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