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Precise Calculator is a free scientific calculator for Windows.Features: arbitrary precision (from 1 to 9999999) complex numbers fractions lists, vectors, matrices history (shortcuts ctrl+up, ctrl+down) calculator can write all results to a log file commands if, goto, print, return unlimited number of variables frequently used formulas can be saved as macros calculator can be translated to other languageshttp://preccalc.sourceforge.net/reference.shtmlCurrent version is 2.5Precise Calculator 32-bit (127 kB)Precise Calculator 64-bit (167 kB)System requirements: Intel or AMD processor Microsoft Windows operating system (tested on Windows 98/ME/2000/XP/Vista/7) 64-bit version runs only on 64-bit Windows Installation: Extract ALL files from the ZIP archive. I've created ZIP files by 7-zip, but you can use any archiver to extract files. Some archivers allow to double-click EXE file inside the archive and run it from a temporary folder, but that will NOT work. Drag & drop the EXE file to the Start button which is in the bottom left screen corner. Right-click the EXE file and choose Create shortcut. Then move this shortcut to the desktop. Why to use 64-bit version: Fractions can have larger numerator and denominator. For example, expression (123456 * 12345678 / 3087105371) returns 493.714285714 in Precise Calculator 32-bit, but it returns 3456 / 7 in Precise Calculator 64-bit. Precise Calculator 32-bit cannot display numbers greater than 4E+20686623764, but Precise Calculator 64-bit maximum is 1E+9223372036854774730 64-bit version is much faster if you need precision greater than 1000 digits
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