Electronic timepiece having multi-functions

Horology: time measuring systems or devices – Chronological – With simultaneous time indicating means

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368156, G04B 2302, G04F 500

Patent

active

043864236

ABSTRACT:
An electronic timepiece having multi-functions comprises a quartz oscillation circuit as a time standard signal generating circuit, a dividing circuit for dividing the output signal of said quartz oscillation circuit, a timing pulse generating circuit for generating a timing pulse signal which operates many kinds of circuit blocks as an input signal of one part of the output of said dividing circuit, a ROM-circuit as a program memory for executing multi-function operations of the timepiece and others, a program counter and page counter for renewing an address of said ROM-circuit, a RAM-circuit as a data-memory for memorizing a controlling memory, an operated result and a time information, an operation circuit for executing many kinds of operations, a data comparison and a data transformation, a latch circuit as an output data memory circuit for temporarily memorizing a display data or other necessary output data, a driver circuit for displaying all of or a part of the contents of said latch circuit, an alarm sound combining circuit in which a part of the output signal of said dividing circuit can be applied thereto, and wherein at least a part of the address of said program memory is synchronously driven by a 100 HZ signal.

REFERENCES:
patent: 3999059 (1976-12-01), Pitroda
patent: 4024386 (1977-05-01), Caudel et al.
patent: 4063409 (1977-12-01), Bayliss
patent: 4125993 (1978-11-01), Emile, Jr.
patent: 4203278 (1980-05-01), Kondo et al.
D. L. Cohn et al., "A Step by Step Introduction to 8080 Microprocessor System", Dilithium Press, Forest Grove, Oregon, 1977, pp. 27 and 35.

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