Electronic calculator watch structures

Details Electronic calculator watch structures Electronic calculator watch structures

1974-03-27

1976-05-11

Jackmon, Edith Simmons

Registers

Coded record sensors

Particular sensor structure

58152R, 235156, G04B 1930, G04B 3712, G06F 738

Patent

active

039553558

ABSTRACT:
There is disclosed an integral instrument providing timekeeping and display with calculator functions and display accomplished by means of a keyboard assembly mounted on the watch casing and adapted to be worn about a user's wrist. Included is time sharing circuitry to enable common display drivers for the timekeeping and calculating modes as well as power sharing circuitry to enable the use of inexpensive and reliable P-MOS circuitry in the calculator mode without constantly dissipating power. A time-zone setting circuit utilizes logic circuitry to automatically enable the user to change time by direct access to the existing keyboard assembly.

REFERENCES:
patent: 3672155 (1972-06-01), Bergey et al.
patent: 3676801 (1972-07-01), Musa
patent: 3803834 (1974-04-01), Reese
patent: 3813533 (1974-05-01), Cone et al.

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