An improved hierarchical storage management system used in connection with computer systems is provided. after 80% or more curing to a storage modulus at 40\xb0 C. Lower electrical contacts sit adjacent the mesa disposed on the lower emitter layer with upper strip contacts disposed atop the upper emitter layer on the mesa top. A session packet is generated and encrypted. In case a product in a production line, or a newly added inputoutput module, provides information that controls a PLC, this control is enhanced by the RFID connection. The calculator calculates the preconpensation parameter of the recording object bit by linearly adding influence of a transition existing at a two-previous bit of the recording object bit, influences of a transition at a one-previous bit of the recording object bit and influences of a transition existing at one-following bit of the recording object bit and further adding an offset.