DreamCalc Pro 2.

DreamCalc Pro is the professional scientific and financial calculator for Windows. It is easy to use and provides a natural interface with a tactile feel, allowing you to finally dispense with your desk calculator. Financial support: TVM Compound Interest, NPV, IRR, Amortization, and SL, SOYD, DB depreciation. Statistical support, including regression, covariance, normalized variant t, distributions, confidence intervals, Z Values, population and sample STD. Spreadsheet style entry of statistical and cash-flow data. Full engineering features, including display of SI Prefix. Over 200 functions, including extended trigonometry, prime numbers, factorization, permutations and more. Full base-n and numeric precision. Conversions and built-in scientific constants. Supports both standard order algebraic input and true order - like modern scientific calculators. Paper Roll keeps record of input in true algebraic order. On-screen formula display. Runs in system tray (optional). Extensive documentation. Large user base & well tested. Competitively priced. Screenshot is a Must See!