Circuitry controlled by coded manual switching for producing...

Details Circuitry controlled by coded manual switching for producing... Circuitry controlled by coded manual switching for producing...

H - Electricity

04

Q

342/10

H04Q 3/02 (2006.01) G07C 9/00 (2006.01)

Patent

CA 1184632

Abstract Circuitry controlled by a series of switch actuations per a preselected switch code provides a control signal. A plurality of flip-flop circuits are connected for series operation. A plurality of switches in excess of the number of digits in the code are available to provide an actuating signal for a flip-flop circuit. A time delay provided between successive flip-flop circuits enables a given switch to be used more than once for a switch code. Automatic resetting of the last flip-flop circuit at which the control signal is provided allows the control signal to be repeated one or more times before all of the flip-flop circuits are reset. A time delay circuit at the first flip-flop circuit provides for automatic reset of the circuitry. Each switch not connected to a flip-flop circuit as a digit of the switch code will, when actuated, reset the circuitry.

412833

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