An improved synchronization system and method for copies of data in a computer system. A composite sheet comprises an elastically stretchable layer and an inelastically stretchable layer formed with inelastically stretchable continuous fibers bonded to at least one surface of the elastically stretchable layer intermittently in one direction. In one embodiment, the actuator includes a pair of axially extending legs having cam members formed thereon to engage a bridge member spanning diametrically across the housing. The configuration data may include device data for the various hardware devices and memory that is typically identified and configured by a standard BIOS program. Tuning of the excitation band is accomplished by changing the alloy composition of the core.