XL ACalc is a free and advanced Scientific Calculator which is capable of solving extremely complex mathematical expressions. In addition it can handle a variety of analytical, numerical and statistical problems. XL ACalc can be started using the command acalc without quotes. Click on start menu, then click run. Type acalc in the Run Box and press enter. You can use [Win Key]+[R] to invoke Run Box. Here are some key characteristics of XL ACalc : · Provides an easy to use and intuitive interface. · Can handle complex, binary, hexadecimal and octal expressions. · adeptness to solve Equations, Matrices, Polynomials, Analytical and Statistical Problems. · Provides helpful tips and information for selected operation. · Facility to save the results. · Can record history of operations performed. · Various options to control mathematical degree and precision. · Can accurately locate and intimate expression errors · Provides an easy way to input problem data. · Possess a plethora of tools to carry out base and expression conversions, bitwise operations and more... · Comprehensive documentation. · Its FREE!