This calculator has bigger and better features than the Windows calculator: It has a scrollable tape and allows you to save calculations as a text file or send to printer. Optional large screen display is very easy to read. For multiple calculations, open several Americalculators and column totals add automatically to the main Americalculator. Obtain the capitalized interest for installment plans, rule of three, and capitalized amounts, and it even calculates dates and times. This program read and calculate values from clipboard and automatically saves calculations also to the clipboard. NEW FEATURE: "Undo" function -- press Ctrl+Z to undo the last operation. You can even select up to 128 different synthesized sounds when typing -- it is very simple and easy to use. Languages: English, Spanish, and Portuguese.