Registers – Keyboards – With total transfer to keyboard or the like
Patent
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.
Fuller Benjamin R.
Hix L. T,.
The Laitram Corporation
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