Contoured touch type data processing keyboard

Details Contoured touch type data processing keyboard Contoured touch type data processing keyboard

1989-03-21

1991-02-19

Malzahn, David H.

Boots, shoes, and leggings

G06F 3023

Patent

active

049949926

ABSTRACT:
Typically twelve keys are arranged for one-hand touch typing in alphanumeric data processors permit a single finger to choose either single keys or multiplicities of side-by-side keys to give enough selection for alpha processing and to arrange keys conveniently about the fingers for touch typing. Tactile feedback structural patterns including indentations and raised surface portions identify single keys and intersections of two and three keys where the finger strokes occur. By providing three key intersections a larger number of different selections of input data characters or control functions may be entered with fewer keyboard keys.

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patent: 4412210 (1983-10-01), Washizuka et al.
Beausoleil et al., "Compact Keyboard", IBM Tech. Disclosure Bulletin, vol. 13, No. 11, Apr. 1971, p. 3574.

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