Mini Calculator is a useful and straightforward calculator that has two views - basic and extended one, a simple loan calculator, and full-color control for almost all its items.
Features:
Make it "Always on top".
Speed up your sequenced calculations by "In Memory Mode".
Design its behavior - exit on escape key, multiple instances
Change precision representation (digits quantity - total, or after decimal point).
Change how it looks - colors for almost all its items, make it bigger and make the text on the buttons and in the result windows bolder.
Copy to it (paste) values and simple expressions (as you type them into the calculator) and copy results from it, or do paste-copy by one touch.
Free42 HP-42S Calculator Simulator is an Open Source recreation of the HP-42S Scientific Programmable Calculator and HP-82240 Printer. Plus42 is also available.