calcsupreme, an rpn calculator emulation and much more, encompasses a wide range of fundamental and sophisticated basic, financial, math/science, and logic operations, accessible respectively via 4 different screens. basic operations include arithmetic, algebraic functions, data manipulations, numeric formatting, and menu selections. business/finance includes loan/savings, cash-flow, bond, discount, markup, depreciation, calendar, and miscellaneous calculations. math/science includes log/exponential, trigonometric, hyperbolic, and user-designed functions (with new option for algebraic coding of user functions). also provided are matrix operations, coordinate conversions, curve-fitting, plotting (linear and log), integration, differentiation, time, calendar, probability, and statistics. user can switch between simple variables and complex variables, where applicable. logic operations include boolean arithmetic in 3 principal number systems. but calcsupreme does far more than emulate a calculator. program uses multiple resources of pc and pc software, incl pull-down menus, message/dialog screens, file/list boxes, disk drive(s) and data/user files, clipboard, printer, near-full monitor screen for plots and printouts, hints for all functions, and detailed help screens--features generally not available in hand-held devices. without spreadsheet labor, calcsupreme makes common (and some uncommon) spreadsheet operations immediately available to you, the user. also, you can exchange data between calcsupreme and a spreadsheet or other program by use of menu items cut, copy, and paste. moreover, calcsupreme has potential to expand--forever! in addition to planned upgrades of certain existing functions, new functions and tasks will be added as dynamic link libraries (dlls). beyond the 4 dlls supplied with present version of calcsupreme, framework now exists for additional dlls, as listed in pertinent help screen, and more framework will be added as needed.