A work station with modular elements particularly simple to be handled and allowing the station to be transformed in response to the product to be assembled is provided. The transfer device comprises a first conveying device which is moved in cycles, a second conveying device which is moved in cycles and extends, at least in sections, parallel to the first conveying device, and a pushing device which performs a pushing motion substantially perpendicular to the transport direction of the conveying devices. Alternately, or in addition, the analysis may include determining that a partition has changed, and invalidating data in response to the changed partition. For avoiding additional memory accesses caused by moving data already contained in the memory into the decoder address range, the apparatus has an address translator which translates the decoder addresses into translated addresses and uses the translated addresses for accessing the memory device. The blocks may be releasably connected by aligning the top holes of one block with the bottom holes of another block, and then inserting connectors into the aligned pairs of holes, one connector per aligned paid of holes.