I know that no software can be patented in Europe. But what if I use software in an electronic board, and introduce that hardware? Can that be patented?
Software cannot be patented although it does have copyright.
Hardware can be the subject of a patent, however, that would not cover any software aspects such as the programming built into a PROM.
While it is possible to render any software into an integrated circuit, practically, anything simple enough to make this feasible is probably too simple to patent.