Non-volatile memory system

Details Non-volatile memory system Non-volatile memory system

1980-06-26

1985-03-05

Shaw, Gareth D.

Boots, shoes, and leggings

364707, G06F 738, G06F 104, H02J 904

Patent

active

045034940

ABSTRACT:
Disclosed is a non-volatile memory system which includes a first power means for providing a main power source; a read/write memory means for storing and retrieving data signals so long as power is provided; and second power means for coupling to the first power means and to the read/write memory means, the second power means including auxiliary power means for providing a second power source; the second power means further including controller means for continuously providing power to the read/write memory means from either the first power means or the auxiliary power means. In the preferred embodiment, the first power means is within a housing, said housing having a compartment for the receipt of a plug-in module, and the second power means and read/write memory means are contained within the plug-in module. Additionally, in the preferred embodiment, the memory means and the second power means exclusive of the second power source are comprised of a single integrated circuit. Furthermore, in the preferred embodiment, the power controller and memory system are coupled to a data processing system such as an electronic calculator.

REFERENCES:
patent: 3941989 (1976-03-01), McLaughlin et al.
patent: 4131942 (1978-12-01), Gillett et al.
patent: 4143283 (1979-03-01), Graf et al.
patent: 4162526 (1979-07-01), Gass et al.
patent: 4203153 (1980-05-01), Boyd

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