Nonvolatile counter circuit

Details Nonvolatile counter circuit Nonvolatile counter circuit

1974-09-26

1976-04-13

Fears, Terrell W.

Communications: electrical

Digital comparator systems

307221C, 307224C, 307238, 307279, G11C 1140, G11C 1300

Patent

active

039507378

ABSTRACT:
A nonvolatile counter circuit is disclosed which includes a nonvolatile insulated gate type field effect memory transistor interposed between the load and active elements of a flip-flop circuit. A switching element is connected in parallel with the memory transistor and a circuit is provided for returning information stored in the nonvolatile memory transistor to the flip-flop after the circuit power source has been turned on. A circuit is also provided for erasing the information stored in the nonvolatile memory transistor. A circuit element is provided for short-circuiting the switching element, and a circuit is provided for writing the information stored in the flip-flop circuit into the nonvolatile memory transistor at the transient of switching off the power.

REFERENCES:
patent: 3679913 (1972-07-01), Fultz
patent: 3745540 (1973-07-01), Taniguchi

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