Combinatorial keyboards which encode characters and a space

Details Combinatorial keyboards which encode characters and a space Combinatorial keyboards which encode characters and a space

1984-08-21

1987-04-07

Pearson, Charles A.

Typewriting machines

Plural-key-actuated typewriter

400472, 400489, 340365S, B41J 506

Patent

active

046556214

ABSTRACT:
A keyboard for a typewriter or a computer comprises two groups of keys for operation by the digits of the two hands of an operator. Each group has five home keys, and also some non-home keys, arranged in continuous rows. A decoder is provided for decoding the operation of the keys so that operation of each individual home key of the first group signals a respective vowel and simultaneous operation of a home key of the first group and a home key of the second group signals a consonant. Additional rows provide for output of a character and a space.

REFERENCES:
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patent: 4458238 (1984-07-01), Learn
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IBM TDB; "Digital X Typewriter Keyboard"; D. L. Conway; vol. 18; No. 12; pp. 4187-4190; May 1976.
IBM TDB; "Easy to Learn Programmable Keyboard"; R. E. Bacon; vol. 24, No. 5, p. 2465; Oct. 1981.
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"A Ten-Key Typewriter"; E. T. Klemmer; IBM Research Memorandum; RC-65; Nov. 1958.
"Evaluation of an 8-Key Word-Writing Typewriter; G. R. Lockhead et al; IBM Research Memorandum; RC-180; Nov. 1959.

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