  Using the synthesis approach of Manna and Waldinger, a formally specified and
verified control circuitery for a production cell was developped. Building an
appropriate formal language level, we could achieve a requirements
specification to the informal description. We demonstrated that the paradigm of
deductive synthesis can be applied to the development of complete verified
systems, including hardware and mechanics. We defined two domain-specific
logical operators that schematise frequent patterns in specification and proof
and hence allow a more concise and expressive presentation. In Burghardt
(1995), an english short version of this paper, without appendices, can be
found.
