MegaCalc 4.0
 
Megasoft2000 Ltd.
Palm Software Division (PSD).

Index
Description 
System requirements
Installation
About MegaCalc
Some key features
Simple Mode
Engineering mode
Constants
RPN mode
Unit conversion mode
Currency mode
Tip mode
Mortgage mode
Main Menu
Preferences
Registration
About

Description
    MegaCalc is a powerful calculator that includes practically all the basic calculation modules for every day use. The variety of functions enables you to perform nearly all calculations (mathematical, financial, conversion, credit, etc.), which you may need in your day-to-day activity. Guarantee of absolute mobility, user-friendly interface, easy to use make MegaCalc program your constant mobile assistant.
System requirements
  • Supports handhelds running Palm OS 5.0 or later.
  • Supports Hi-Res (320x320) and Hi-Res Plus (320x480, 480x320) displays.
  • Supports 16-bit color displays only.

Installation
    To install this application you should synchronize the "MegaCalc.prc" application to your device. Files can be installed by using the Desktop software or just any other application.

    Note! If you have a previous version of MegaCalc installed on your device you should delete it before installation.


About MegaCalc
    The MegaCalc application is a multifunctional calculator designed to implement the same operations as an ordinary calculator does. It fulfils basic arithmetic operations, such as addition and subtraction and also the functions of an engineering calculator, for example determination of logarithms and factorials. Now you don't have to carry some extra calculator with you.
    Basic modes
     
  • Simple
  • Engineering
  • Unit conversion
  • Currency
  • Tip
  • Mortgage
    Main features
     
  • Wide-screen 17-digit display
  • 3 different modes to display intermediate values and result
  • All calculations are performed using 34 decimal digits precision
  • 36 basic math and trigonometric functions
  • Full Degrees/Radians/Gradients conversions
  • 20 built-in most common constants
  • Constants editing capability
  • Decimal/Octal/Binary/Hexadecimal conversions up to 32bit
  • Calculation range [±9.99999(9)e-6140 .. ±9.99999(9)e+6140]
  • 3 different types of entry logic (simple, algebraic, RPN)
  • RPN stack displaying
  • 16 independent memory cells
  • Digits grouping capability
  • Unit converter (more than 1600 units)
  • Currency Converter
  • Tip calculator
  • Mortgage rate calculator

Some key features
      One of the 6 basic modes can be selected in this list.

      In each MegaCalc mode the "Options" key contains the list of frequently used functions.

      The entire information is displayed on the LCD panel. Touching the screen leads to the system menu displaying.

     
    Use the menu to switch the modes, to access program preferences, registration and about screens. Press the "Menu icon" button, to bring the menu up.


    RPN entry logic can be enabled within MegaCalc preferences: Menu icon/Options/Preferences

Simple mode
     
    This mode is a substitute for a standard (built-in) calculator
    including TAX calculations. This calculator uses simple logic (optionally RPN), so it performs calculations without any priority.

      Backspace key: Clears the last digit entered from the display
      Clear Entry key: Clears number just entered
      Clear key: For clearing all entries and results
      Memory Store key: For storing the displayed number in the memory
      Memory Recall key: For recalling memory contents
      Memory Clear key: Clears the memory contents
      Memory plus key: For adding displayed numbers to the memory contents

     
    When the "MR", "MS", "MC" or "M+" keys are pressed and held, the "Active Memory Cell" window appears. This window contains 16 cells (additional registers) that allow performing calculations with a big number of external constants or temporary numbers quite handy. Here you can select an active memory cell. It's a cell, over which all the operations will be performed.

           Basic Calculation keys: Press these keys in their logical sequence for addition, subtraction, multiplication, division, and to display results.
      Sign Change key: Press this key to change the displayed number from positive to negative and vice versa. If you press this key in exponent editing mode, the sign of the exponent changes.
      Square Root key: Press this key to find the square root of the displayed value.
      Percent key: Used for percentage, add-on and discount calculations.
      Reciprocal key: Press this key to calculate the reciprocal of the displayed value.
     ...    Data entry keys: Press these keys in their logical sequence to enter numbers.
      Decimal point key: Used for decimal point entering.
      TAX RATE value setting button
      TAX INCLUDED value calculation button
      TAX EXCLUDED value calculation button

Engineering mode
     
    Engineering calculator includes all the basic logical, mathematical and trigonometric functions used for every day calculations. This calculator uses algebraic logic (optionally RPN). It performs calculations using the following priority:
    • Functions
    • Calculations in parenthesis
    • Power and root calculations
    • Multiplication, division and modulo
    • Addition and subtraction

      Memory Store key: For storing the displayed number in the memory
      Memory Recall key: For recalling memory contents
      Memory Clear key: Clears the memory contents
      Memory plus key: For adding displayed numbers to the memory contents
           Basic Calculation keys: Press these keys in their logical sequence for addition, subtraction, multiplication, division, and to display results.
      Sign Change key: Press this key to change the displayed number from positive to negative and vice versa. If you press this key in exponent editing mode, the sign of the exponent changes.
      Percent key: Used for percentage, add-on and discount calculations.
     ...    Data entry keys: Press these keys in their logical sequence to enter numbers.
      Decimal point key: Used for decimal point entering.
        Parenthesis keys: For performing parenthesis calculations
      Hexadecimal calculation mode
      Decimal calculation mode
      Octal calculation mode
      Binary calculation mode
      Shift key: Additional trigonometric and hyperbolic functions access
      Hyperbolic key: For performing hyperbolic and inverse hyperbolic functions for sine, cosine and tangent.
         Degree/Radian/Gradient mode key: Used to select an angle unit.
         Used to convert angle value from the current units to different units
         Sine, Cosine, Tangent keys: Calculate the trigonometric functions of the displayed value.
         Arc Sine, Arc Cosine, Arc Tangent keys: Calculate the inverse trigonometric functions of the displayed value.
         Hyperbolic Sine, Cosine, Tangent keys: Calculate the hyperbolic functions of the displayed value.
         Hyperbolic Arc Sine, Arc Cosine, Arc Tangent keys: Calculate the inverse hyperbolic functions of the displayed value.
         Value size keys: Used to select the value size in bits.
     ...    Hexadecimal number entry keys
      Functions key: Additional algebraic and logic functions access
      Switch key: Additional algebraic and logic functions access
      Constant key: Calls out the constant to the display
     ...    Quick constant keys: These keys can be associated with any constant in the list of constants. Press and hold the key to select the constant value.
      Square key: Used to square the displayed value.
      Square root key: Used to find the square root of the displayed value.
      Power key: Used to raise any number [X] to any number [Y] power.
      Root key: Used to find [Y] root [X].
      Common Antilogarithm key: Used to calculate the common antilogarithm of the displayed value.
      Common Logarithm key: Used to calculate the common logarithm of the displayed value.
      Natural Antilogarithm key: Used to calculate the natural antilogarithm of the displayed value.
      Natural Logarithm key: Used to calculate the natural logarithm of the displayed value.
      Reciprocal key: Press this key to calculate the reciprocal of the displayed value.
      Modulo key: Evaluation of a residue of division [X] by [Y].
      Cube key: Used to cube the displayed value.
      Numbers sum key
      Factorial key: Used to find the factorial of the displayed value.
      AND key
      NOT key
      OR key
      XOR key
      Integer Part key: Omits the fractional part of the value and displays only the integer portion.
      Fractional Part key: Omits the integer part of the value and displays only the fractional portion.
      Left Shift key
      Right Shift key
      Exponent key: To enter a number in scientific notation, first enter the numbers for mantissa, press this key, and then enter the numbers for the exponent.

Constants
     
    MegaCalc has a built-in list of constants. Those can be used for complicated calculations or some other purposes.

    Each constant can be edited. To change the name and the value of the constant, select a constant and press the "Edit..." button.

RPN mode
     
    RPN originates from Reverse Polish Notation. RPN entry logic can be enabled for Simple and Engineering modes via MegaCalc preferences.

    Reverse Polish Notation - a method of mathematical expression recording without brackets - was founded by Jan Lukasiewicz in 1920. Using RPN you'll see that this method ranks over the algebraic format.

    RPN use stack and mathematical operations are slowly performed on the lower stack level. Stack is used as memory where the results required for your next formula evaluations are stored. That is why there is no need for any brackets in RPN calculators. First you enter numbers into stack and then "order" what it should be done with them. For example, you wish to calculate: (( 3 + 1 )^2 + 1) * 4. To do this, you should enter the following:

    3 enter
    1 +(right away you'll see this operation result: 4)
    x**2(right away you'll see this operation result: 16)
    1 +(right away you'll see this operation result: 17)
    4 *(end result: 68)

    So, to calculate this expression you've pressed the keys 9 times and witnessed all intermediate results. Similarly you would calculate this without any calculator, just mentally. In other words this calculator works the same way as a human's brain.

    If we compare this calculation process with that on an algebraic calculator, we'll see that in this case we'll have to press 12 keys and the intermediate results will be hidden. There are some other advantages:

    • RPN saves key pressing time. You don't have to use parentheses when calculating. This process is similar to that of calculating on a sheet of paper.
    • You see the intermediate results. This is an extremely useful side product.
    • An intermediate result makes it possible to check the calculations and easily correct the mistakes. It is less complicated to follow the calculation flow. A user defines operators' priority.
    • RPN is logical, as a user first enters a number and then orders what to do with it.
    • As subexpressions are calculated right after they are entered, input errors are more than demonstrable. In case of an algebraic calculator, an omitted initial bracket might cause a calculation error much later when the entire subexpression has been calculated.

      Value entry into the stack register
      Swap the values in X and Y registers
      Rotation of stack registers (a value from T register transfers to Z register, from Z to Y register, from Y to X, from X to T)
      Lower stack register (X) clearing
Unit conversion mode
     
    This mode allows you to convert all possible values from some units to other without any difficulties.


    Sample operation:
    • Select the desired units group, for example "Angles"
    • Select the source units
    • Use the field "Value" to enter the value, which you want to convert
    • Select the destination units
    • The result of conversion will be shown on the display


Currency mode
     
    This mode enables to perform the conversion of currency.

    Sample operation:
    • Select the currency the conversion will be done from
    • Select the currency the conversion will be done to
    • In order to perform the conversion correctly, enter the rate and commission parameters in corresponding fields
    • Enter the value you want to convert
    • The result of conversion will be shown on the display


Tip mode
     
    This mode will be very helpful when you visit cafes, restaurants or travel by taxi, etc.

    • Select the value of all parameters ("People", "Tax", "Tip", "On tax")
    • Enter the "Total Check" value
    • As a result you'll get "To Pay", "Tip", "Share" values on LCD panel



     
    To adjust the "Tip" mode parameters more precisely, press the "Options" in the lower part of the screen and from the list appeared select "Edit Lists".


Mortgage mode
     
    This is a simple mortgage calculator.

    Loan amount - The total amount of the money that you have borrowed.

    Loan term - The number of months you have to pay the loan.

    Interest rate - The exact interest rate on your mortgage.

    Annual tax - Property tax is also called real estate tax. This tax is paid to the local taxing authority or municipality.

    Annual insurance - Also called property insurance, homeowner's insurance protects the homeowner from weather-related damage, as well as potential liability from events that occur on the property.


Main Menu
     
    Select one of the six calculator modes available.

  • Simple
  • Engineering
  • Unit conversion
  • Currency
  • Tip
  • Mortgage


     
    Preferences - This window features all settings of the "MegaCalc" program, which will be described below.
    Registration - This window allows you to enter the registration code.
    About - The information about this program developers.


Preferences
     
    Notation - Notation used to display numbers (see description below)
    Group Digits - Digits grouping activation
    Use RPN as Entry Logic - RPN entry logic activation

    Scientific notation, also known as standard form, is a notation for writing numbers that is often used by scientists and mathematicians to make it easier to write large and small numbers. A number that is written in scientific notation has several properties that make it very useful to scientists. The basic concept for the practical notations is this mathematical exponential expression using powers of ten: number = a * 10 b, wherein b is an integer, called exponent, and the coefficient a any real number, called the significand or mantissa.

    Engineering notation is scientific notation in which the power of ten must be a multiple of three.

    Mixed notation - notation for writing numbers, which allows a number to be written in a normal non-exponential form as long as it fits the screen size, otherwise the scientific notation is used.


     
    Calc Mode - The program will always launch from the view, selected in this option
    Notation - At program launch the notation selected will be used.


     
    Background - Screen color selection
    Foreground - Screen indication elements color selection


     
    This skin manager enables you to activate other skins, which you should download onto your device in advance, transfer skins from your device to SD/MMC card and vice versa, transfer skins to other devices with the help of the “Beam” command, and delete them. MegaCalc has a default built-in skin, which can’t be deleted. All supplementary skins are available from the distributive "MegaCalc.zip" archive or at the official MegaCalc page.



Registration
     
    Registration of the MegaCalc application

    Once you have purchased the MegaCalc application, you'll get the registration code, which is necessary to enter in the registration field to complete the registration of the program.

    Note: All the subsequent versions of this application are free for the registered customers!


About
     
    Information about the MegaCalc application developers.



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