Hand-held calculator or similar keyboard device

Details Hand-held calculator or similar keyboard device Hand-held calculator or similar keyboard device

1980-02-08

1982-04-13

Hix, L. T.

Registers

Keyboards

With total transfer to keyboard or the like

340365R, G06C 702

Patent

active

043249760

ABSTRACT:
A hand-held calculator in which respective keyboards are arranged along the front face and rear face of the calculator housing and disposed along transverse axes such that each keyboard is in immediate position for use upon rotation of a user's wrist without any repositioning of the calculator in the hand. The use of both front and rear keyboards permits additional keyboard capability without increasing calculator size and without requiring multi-function keys.

REFERENCES:
patent: 4128889 (1978-12-01), Ojima et al.

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