Electronic wristwatch incorporating calculator

Details Electronic wristwatch incorporating calculator Electronic wristwatch incorporating calculator

1972-12-27

1977-04-19

Smith, Jerry

Registers

Transfer mechanism

Traveling pawl

235152, 58 50R, 58152R, G06F 748, G06F 302, G04B 1930

Patent

active

040190374

ABSTRACT:
An electronic wristwatch having a digital display and time-keeping apparatus for driving said digital display is provided with calculating means selectively coupled to said digital display. An input arrangement for said calculating means is provided consisting of a ring rotatably mounted on said wristwatch, and fixed and rotatable contact means respectively mounted on said wristwatch and ring for selective alignment at positions representative of the numerals 0 to 9 and at least one function character. Switch means is provided for applying the numerical or function character at which said ring is set to said calculating means, a further switch means being provided for selective setting of the wristwatch between a time keeping and calculating mode.

REFERENCES:
patent: 3431722 (1969-03-01), Haas
patent: 3514939 (1970-06-01), Cattin
patent: 3546696 (1970-12-01), Waters et al.
patent: 3613351 (1971-10-01), Walton
patent: 3646751 (1972-03-01), Purland et al.
patent: 3691755 (1972-09-01), Girard

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