Dual function memory

Details Dual function memory Dual function memory

1977-08-09

1979-04-10

Fears, Terrell W.

Static information storage and retrieval

Read only systems

With override

307279, 365156, G11C 1140, G11C 1700

Patent

active

041492684

ABSTRACT:
An unbalanced bistable, memory cell operable as a read/write and read only memory having a first switch for disconnecting the cell from a power supply and a second switch for interconnecting the information storage nodes in response to a power down signal to discharge the nodes and allow the memory cell to store a preselected bit of information determined by the unbalance after reconnection of the power supply and disconnection of the nodes upon the absence of the power down signal.

REFERENCES:
patent: 3493786 (1970-02-01), Ahrons et al.
patent: 3636530 (1972-01-01), Mark et al.
patent: 3798621 (1974-03-01), Baitinger et al.
patent: 3868656 (1975-02-01), Stein et al.
patent: 3959781 (1976-05-01), Mehta et al.
patent: 3971004 (1976-07-01), Dingwall
patent: 4035784 (1977-07-01), Brown
Ho et al., "Programmable Memory Circuits", IBM Tech. Disc. Bull., vol. 17, No. 11, 4/75, p. 3279.
Balasubramanian et al., "Monolithic Storage Cell having Inherent Latent Image Memory Operation", IBM Tech. Disc. Bull., vol. 17, No. 12, 5/75, pp. 3634-3635.

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