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TRURL is a suite of desktop calculators with reverse Polish notation (RPN) written in Object Pascal. Additionally, it comes with a free reusable class library (RPN Engine) as a toolbox for creating your own calculator. TRURL is an acronym for "TRURL is a Reusable Universal RPN Library". Class Libraries: • RPN Engine: Full-featured calculation engine for Pascal-based RPN calculators • Segmitator: Library for virtual seven-segment displays Applications: • TRURL A: Simple demo app...

Integer and fractional elements are allowed, but not floating point numbers. Matrices (or their elements) and systems of linear equations can be also generated by the app, to practice with operations and propieties. The app calculates the matrix range, determiner of square matrices, traspose, inverse of inversible matrices (that is, square matrices with non zero determiner), the matrix of adjuncts, the forms of Gauss and Gauss-Jordan. It allows submatrices extraction by selection of rows...

This app allows build by introducing chemical compunds or import from a database equations of chemical reactions and balance them. Also it makes stoichiometric calculations with the balanced equation Do stoichiometric calculations on the balanced equation. Results can be saved in a text file. Also, there is an editable database of chemical elements. It is an integrated environment for aspects that usually are treated separately: Balancing of chemical reactions and stoichiometric...

This app sets and gets the plane height and slope. You can see, store, load and plot plane test results to observe the rolling/sliding phenomen.