Non-volatile memory system

DETAILED DESCRIPTION A non-volatile read/write memory module and a data processing system utilizing said module.
The non-volatile read/write memory module is comprised of a first coupling means for coupling to an external power source provided by said data processing system; an auxiliary battery power source; power switching means coupled to said first coupling means and to said auxiliary power source for continuously providing a power output from either the external power source or the auxiliary power source; and read/write memory means for storing and retrieving data signals coupled to said power switching means wherein said read/write memory means retains data stored therein responsive to receiving a continuous power output from said power switching means.
In the preferred embodiment, the non-volatile read/write memory module includes means for physically and electrically interfacing to said data processing system, and is removable from said data processing system, retaining valid data in said memory means irrespective of coupling to said data processing system.
Additionally, said second power means provides a continuous power output irrespective of the coupling to said data system.