Smath

The automatic electronic calculus is a great help as it is the automatic drawing also named CAD. I would like to point out a program called Smath which I think is exceptional. It is a WYSIWYG (What You See Is What You Get) calculation program with strong unit of measure support and it is also free. You can download it from this address in the latest version. The first example I propose is a rudimentary bias calculation of a bjt transistor .