Keyboards including color coding and one handed operation

Details Keyboards including color coding and one handed operation Keyboards including color coding and one handed operation

1983-10-31

1985-11-26

Wright, Jr., Ernest T.

Typewriting machines

Key-board or key lever-actuating mechanism

Key-board arranged according to character location

400 83, 400 88, 400100, 400472, 400487, 400489, 340365R, B41J 510

Patent

active

045551936

ABSTRACT:
A keyboard is disclosed having keys subdivided into one or more fields. Two keys from the same field concurrently actuated identify a particular character. Characters are also identified by the actuation of a single key independently of any other key. Pivot keys may be included which are a part of more than one field. A color coding arrangement makes the two key combination unambiguously suggested by the keyboard itself. These features make possible a reduction of the number of keys such that a full set of alphanumeric characters may be arranged on the keyboard for one handed operation.

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Byte (The Small Systems Journal), Apr. 1982, vol. 7, No. 4, a McGraw-Hill publication, 5 pages reprint.
IBM Technical Disclosure Bulletin, "Interactive Complex Transaction Keyboard and Display", Svigals, vol. 24, No. 3 Jul. 1981, pp. 1224-1226.

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