Electronic timepiece including a schedule memory device

Horology: time measuring systems or devices – With memorandum holder or erasable writing surface

Patent

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Details

368 28, 368 30, G04B 1924, G04B 4500

Patent

active

047746971

ABSTRACT:
In an electronic time-keeping apparatus wherein a plurality of schedule data is stored, chronologically readable, and displayed, schedule data input from a key input section is compared, under control of a read only memory, with a number of schedule data already stored in a random access memory, and edited in a time sequence of recency with a present date as a reference basis to permit the edited schedule data to be stored in this random access memory. A time count operation is performed each time a predetermined timing signal is output from a frequency dividing circuit. A detection is made as to whether or not there is a coincidence between present date data obtained by the time count operation and the edited schedule data stored in the random access memory to see if an appointed date is reached.

REFERENCES:
patent: 3999050 (1976-12-01), Pitroda
patent: 4276541 (1981-06-01), Inoue et al.
patent: 4293845 (1981-10-01), Villa et al.
patent: 4415271 (1983-11-01), Mori
patent: 4485463 (1984-11-01), Kita

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