Digital time signalling device

Details Digital time signalling device Digital time signalling device

1977-08-03

1978-12-26

Heyman, John S.

328 37, 328 48, 58 855, H03K 513

Patent

active

041318552

ABSTRACT:
A digital time signalling device which includes an oscillator and frequency divider producing clock pulses at a given frequency, a counter for counting clock pulses to produce minute pulses, a counter for counting minute pulses to produce hour pulses, an hour counter for counting hours, a time setting unit and a coincidence circuit for comparing the outputs of the hour and minute counters with the output of the time setting unit to produce a coincidence signal activating a utilization device.

REFERENCES:
patent: 3657658 (1972-04-01), Kubo
patent: 3909620 (1975-09-01), Matsuda et al.
patent: 3979681 (1976-09-01), Arnold
patent: 4001699 (1977-01-01), Denny et al.
patent: 4080575 (1978-03-01), Miki

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