PCalc and ProCalc are two small applications
that each mimic scientific calculators. The usual set of scientific and trigonometric
functions you would expect to find in a scientific calulator are implemented in each
of them. For each calculator, I have included a short description below, followed
by their pro's and con's.
PCalc presents the typical scientific functions, along with decimal, hex, and binary
number conversion, with a user interface you would expect for a simple scientific
calculator. It also includes additional functions in pulldown menues, such as measurement
unit conversion and constants. These extra functions are also extensible by editing
a text based functions definitions file, should you need one that is not included.
ProCalc seems the most polished of the three calculators reviewed here. It provides
a nicely layed out user interface with all the usual scientific functions and decimal,
hex, octal, and binary number conversions clearly available on its buttons. An optional
ticker tape is also provided, as well as an option in its menus to determine how
results are calculated. That is, you can choose the conventional nonscientific "sequential"
order of calculation, the "algebraic" order common to scientific calculators,
or "RPN" (Reverse Polish Notation) order common to HP calculators.
In summary, the Pros of each calculator application are as follows:
 PCalc  Simple interface and user
extensible functions as well as measurement unit conversions available from pulldown
menues.
 ProCalc  Friendly interface, optional
ticker tape, user selectable computational order.
The Cons are:
 PCalc  Accessing of extra functions
from pulldown menues has cumbersome feel. No ticker tape available.
 ProCalc  Lacks measurement unit
conversions and user defined functions.
Comparitive ratings:
Application name 
PCalc 
ProCalc 
User Interface: 
3.5 Mice 
4.5 Mice 
Functionality: 
4.0 Mice 
4.0 Mice 
Overall: 
3.5 Mice 
4.0 Mice 
