N Indicator-switches connected for one of N selection by N wires

Details N Indicator-switches connected for one of N selection by N wires N Indicator-switches connected for one of N selection by N wires

1981-07-27

1983-05-03

Yusko, Donald J.

Communications: electrical

Continuously variable indicating

With meter reading

340332, 307272R, H04Q 100, G08B 500, H03K 3284

Patent

active

043822576

ABSTRACT:
Any number N of light emitting diode (LED) push-button indicator-switches are connected by one wire each to a corresponding N interconnected assemblages of four cross-coupled logical elements each. A pushbutton activated signal input through a one connective wire causes a cross-coupled flip-flop storage action within the associated assemblage which will maintain the L.E.D. lit by outputting on the selfsame connective wire after the pushbutton is released. A one-shot circuit merged in each assemblage clears via the interconnect the stored signals of all other assemblages when a new pushbutton signal is activated. One of N selections between N indicator switches is thusly obtained with only one wire connection to each.

REFERENCES:
patent: 3461444 (1969-08-01), Eisele
patent: 3581108 (1971-05-01), Eisenmenger
patent: 3590281 (1971-06-01), Russell
patent: 3866211 (1975-02-01), Curtis
patent: 4083013 (1978-04-01), Schultz

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