DeskCalc Pro 8.2.9 + Portable | 6.4/7 Mb

DeskCalc is a feature rich "paper tape calculator" with all of the functions you expect from a mechanical adding machine plus capabilities associated with a Windows environment. Features include: a check-strip with ergonomic text input options; data correction features (update, add and delete values); built-in formula interpreter; sales tax functions; memory function; percentage calculations; currency-conversion; floating point & fixed point calculations, thousands separators; fast correction key; display of the results in task strip and window title line; printing with heading and date/time; and export to Excel.