Calculator with tape. Allows you to save calculations as a text file or send them to the printer. Large screen display (very easy to read). Obtain the capitalized interest for installment plans, rule of three, and it even calculates your Ideal Weight, dates and times, etc. This program reads and calculate values from clipboard. The undo function can undo or redo the last operation. It also has options to stay in systray and HOTKEYS to facilitate.