A multi-functional computing device that is configurable for a plurality of applications. The system allows enhanced services that are recorded to a subscriber’s base telephone data block at the PSTN provider to be configured based on time of day, week, or any user identified formula. However, a terminal group of the lubricant of the lubrication layer, which is applied on the head slider has different structure from a structure of a terminal group of the lubricant of the lubrication layer on the medium. If a valid preamble is not detected in the first bitstream, the controller reads a second bitstream from a second memory block of the non-volatile memory. The magnetic flux concentrator may consist of fixed elements, or a combination of fixed and moveable elements to accommodate end heating of tubular materials having different dimensions or material properties.