Circulating shift register time-keeping circuit

Details Circulating shift register time-keeping circuit Circulating shift register time-keeping circuit

1974-07-26

1976-08-03

Malzahn, David H.

Registers

Transfer mechanism

Traveling pawl

58 23R, G04C 300

Patent

active

039731103

ABSTRACT:
The circulating shift register time-keeping circuit of the present invention comprises five circulating shift registers and controller and time base circuits to provide real-time, stopwatch, date and alarm functions to an eight-digit display means via a display register. The real-time, stopwatch and date registers each include a binary adder, adder controller and auxiliary register coupled to clocked delay elements. The alarm register includes a comparator coupled to similarly clocked delay elements. Timing and command signals are provided to the five shift registers from the time base and controller, respectively.

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