Electrically configurable high-low decoder

Details Electrically configurable high-low decoder Electrically configurable high-low decoder

1978-01-09

1979-12-04

Miller, Charles D.

Communications: electrical

Audible indication

Percussion-type sound producer

H03K 13243

Patent

active

041774558

ABSTRACT:
An electrically configurable decoder including selectively configurable combinations of a plurality of basic decode circuits. The electrically configurable decoder includes a plurality of mode selection inputs, a plurality of address inputs, a plurality of logic level definition inputs, and a plurality of disable inputs. Various combinations of decoding functions are provided by the electrically configurable decoder in response to the mode selection inputs. A plurality of selection circuits selectively decodes various ones of the address inputs and mode selection inputs to produce signals which are applied to decode inputs and enable inputs of the basic decoder circuits. A logical "one" applied to a first one of the logic level definition inputs causes "high" and "low" voltage levels produced at the outputs of a first one of the basic decoder circuits to represent logical "ones" and "zeroes," respectively. A disable signal applied to one of the disable inputs of the electrically configurable decoder causes the outputs of the first basic decoder circuits to assume logical "zero" levels as determined by the first logic level definition input.

REFERENCES:
patent: 3034719 (1962-05-01), Anfenger
patent: 3421151 (1969-01-01), Wong
patent: 3594730 (1971-07-01), Toy
patent: 3716851 (1973-02-01), Neumann
patent: 3860908 (1975-01-01), Stratton

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