Electronic digital clocks

Details Electronic digital clocks Electronic digital clocks

1975-12-23

1977-06-28

Weldon, Ulysses

58 50R, 58 38R, G04C 1306

Patent

active

040316939

ABSTRACT:
An electronic digital clock includes an arbitrary number of fixed value stores the BCD stored values of which are compared with the BCD time representative signals generated by the clock to produce, in the event of coincidence, an electrical output signal which serves for switching purposes. In order to reduce the number of connections to be made to an integrated clock chip the clock may include a changeover switch which enables connections to the clock display device also to be used as connections to the stores.

REFERENCES:
patent: 3664116 (1972-05-01), Emerson et al.
patent: 3759029 (1973-09-01), Komaki
patent: 3834153 (1974-09-01), Yoda et al.
patent: 3940918 (1976-03-01), Everson
patent: 3940919 (1976-03-01), Yasuda et al.
patent: 3943288 (1976-03-01), Reed et al.
patent: 3946549 (1976-03-01), Cake

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