Electronic calculator with time display function

Details Electronic calculator with time display function Electronic calculator with time display function

1979-01-26

1981-01-13

Krass, Errol A.

Boots, shoes, and leggings

364569, 368 22, 368 10, G04B 1922

Patent

active

042453232

ABSTRACT:
An electronic calculator with a time display function which is operable in either a calculator mode, a clock mode or a world clock mode is disclosed. The calculator includes a calculator section for performing basic arithmetic calculations. An input unit is provided for supplying input data and country codes to the calculator section and a time unit signal generator is provided for supplying a time unit signal to the calculator section. The calculator section includes an arithmetic part for carrying out at least the four basic arithmetic calculations; a memory part for storing the output of the arithmetic part, a control part for controlling the arithmetic part and the memory part, and a common display for displaying the contents of the memory. The memory part further includes a time information register means used for storing a reference time of a predetermined standard country and an arithmetic register means used for carrying out the aforementioned basic arithmetic calculations when the calculator is operating in the calculator mode.

REFERENCES:
patent: 3186158 (1965-06-01), Miller
patent: 3813533 (1974-05-01), Cone et al.
patent: 3816730 (1974-06-01), Yamamoto et al.
patent: 3940920 (1976-03-01), Nakamura et al.
patent: 3955355 (1976-05-01), Luce
patent: 4035627 (1977-07-01), Dickinson et al.
patent: 4044545 (1977-08-01), Shimizu

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