Safety circuit to prevent the obtaining of a false count from pr

Details Safety circuit to prevent the obtaining of a false count from pr Safety circuit to prevent the obtaining of a false count from pr

1977-11-25

1979-07-10

Thesz, Joseph M.

Registers

Platform operated

Platform actuated traffic counters

235 92EP, 235 92R, 328 48, G06M 302, H03K 2136

Patent

active

041608984

ABSTRACT:
The invention is concerned with a circuit for the prevention of the obtaining of a false count from presettable counters and includes means to change the number or quantity to be counted. The safety circuit includes a pair of flip-flops, one of which is responsive to provide an output when the predetermined number is changed and to provide a second output after the predetermined number is changed and when the counter completes its count and the counter is to be reset. The second output activates the second flip-flop to insert a new predetermined number into the counter.

REFERENCES:
patent: 3813525 (1974-05-01), Kitterman et al.
patent: 3878370 (1975-04-01), Santomango et al.
patent: 3976859 (1976-08-01), Christie et al.

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