PentaCalc Pro™ is the most powerful and exciting on-screen calculator ever! As a continuation of the popular PentaCalc Windows based calculator, PentaCalc Pro is the comprehensive calculator that works instantly with any Windows application. But PentaCalc Pro isn’t just another calculator. It's the only application that allows you to create your own calculators, either by combining buttons from other calculators, or by creating your own buttons to perform the calculations you need. With PentaCalc Pro you'll never have to worry about exiting your application to use your calculator. Simply press a hot key, and PentaCalc Pro appears on your screen, bringing your highlighted number with it. Once you’ve completed your calculation, press the same hot key, and the answer will be pasted where you left your cursor in the original application. You'll save the time and hassle of bouncing back and forth to your hand-held. We have hone to great lengths to ensure that PentaCalc Pro works easily with the keyboard as well as with the mouse. And the Algebraic, Reverse Polish (RPN,) and 10-key entry notations can be used in any calculator. PentaCalc Pro works just like your hand-held calculator, but it has all the power of a PC to back it up. If you have questions, and on-line, context-sensitive help system comes with the package, as does a manual with 160 pages of explanations and examples. When you're working on your PC, PentaCalc Pro makes your hand-held calculators, your 10-key adding machine, and other Windows calculators obsolete! PentaCalc Pro has a uniquely designed interface that gives you unlimited options. Once you call up a calculator, it is completely re-sizeable and scalable. You also have the option of using multiple calculators at once. They will even snap together and move as a group. A choice of small, medium, large and extra large scales is available for easy adaptation to every monitor, screen resolution, and eyesight ability. You can even change the texture of the calculator and the color of the type. Custom Calculating PentaCalc Pro is so advanced, it offers a feature never seen in a Windows-based calculator before – simple programmability. Whether you're an accountant, engineer, scientist, schoolteacher, or in charge of you family budgeting, PentaCalc Pro offers you the capability of creating the functions you need most. Simply pull up a new calculator and designate each button with a different calculation. If you can do the calculation on a hand-held, you can program it into your specialized calculator, it only takes a few quick steps. PentaCalc Pro allows you to drag any button you wish from one calculator and drop it onto another. You can combine buttons from many different calculators, or create your own buttons, which contain the calculations you perform most often. Quickly Copy and Past Any Calculation Quick Copy/Paste gives you the power to copy any number from one application and paste it into PentaCalc Pro with the click of a user defined hot key. The result of your calculation in PentaCalc Pro can then be transferred back to the previous application by clicking the same hot key. Your calculation will automatically be pasted where you left your cursor. This feature in PentaCalc Pro works with any Windows application, and will save you more time than you ever imagined. Live Tape Recalculates Automatically Every calculation you make is automatically shown on PentaCalc Pro’s computerized tape display with a complete record of which calculations have been performed, and the result of each. The tape is ‘live’ which allows you to make changes directly to the tape, and each modification will be reflected in you final result. For instance, if you are applying for a second mortgage on your home, you could perform a series of calculations to see how the numbers change with each new interest rate entered. What’s more, the tape can be printed and saved at your convenience. Does Your Dimensional Analysis For You A breakthrough feature called Smart Units™ allow you to perform calculations from a combination of units, then get your answer in a single equivalent unit. PentaCalc Pro’s unit conversions can be used to translate the square foot measurement of carpet required to fill your living room into square yards, or it can be used for much more complex conversions. For instance, if you multiply pounds by meters divided by seconds squared, you will receive an answer in newtons! PentaCalc Pro™ does your conversions for you, and guarantees unit consistency! Over 570 unit buttons and 45 separate unit types are included. You can even add your own units. Here are just a few unit calculators from our extensive list:   Area Mass Resistance Currency Momentum Temperature Density Power Velocity Energy Pressure Voltage Length Radioactivity Volume