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OpalCalc

1.75

Comprehensive calculator for your PC

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OpalCalc is a calculator that was specially designed to be used with a computer keyboard, taking advantage of the superior possibilities this offers.

The calculator is very easy to use, and offers an interface that is similar to a notepad, as well as the possibility of using colors to differentiate elements.

The application, of course, lets you do many different operations, work with functions, and set different constants to use them later on.

OpalCalc is a very useful and lightweight tool (less than a megabyte), ideal for mathematicians and scientist.
Restrictions

The trial version lets you write up to five lines

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