A driver monitor for a driver system. The transformation framework identifies process components needed to implement the software system requirement defined by the user story and generates a process language model for each of the identified process components. The method involves adding cysteine residues to non-essential regions of the proteins or substituting cysteine residues for non-essential amino acids in the proteins using site-directed mutagenesis and then covalently coupling a cysteine-reactive polymer or other type of cysteine-reactive moiety to the proteins via the added cysteine residue. This method can be implemented without substantial changes in the signal processing chain of a communication or data acquisition system. In a fourth magnetic head of the present invention, a magnetic gap is provided adjacent to the magnetoresistive device and the magnetic films are coupled antiferromagnetically.