The invention relates to a crankshaft for a reciprocating internal combustion engine, in which the connecting rods are mounted, with an eccentric sleeve connected in between, on the crankshaft journal of a crankshaft. The control gate electrode may have an edge portion spaced farther apart from the blocking insulating layer than a central portion of the control gate electrode to concentrate charge density distribution on a central portion of a memory cell. An optical device for a module according to the invention and a vehicle front light assembly comprising a plurality of modules according to the invention form further subjects of the invention. Memory chips may also be tested over an operating range of values using the generated test patterns.