Communications: electrical – Audible indication – Percussion-type sound producer
Patent
1981-03-13
1983-03-29
Robinson, Thomas A.
Communications: electrical
Audible indication
Percussion-type sound producer
400 82, G06F 304, G08C 900
Patent
active
043785530
ABSTRACT:
An electromechanical interactive terminal system is disclosed, utilizing a split keyboard to accommodate convenient use, even by disabled or infirm persons. The elements of a conventional typewriter (or console) keyboard are provided in two separate and distinct keyboard units, one of which includes the keys normally activated by the right hand while the other has the keys conventionally assigned for use by the left hand. Control and coding keys are similarly assigned. The two separate keyboard units can be used in various positions as by being affixed to a support member so as to be held in spaced-apart relationship, contiguous to the hands of an operator with his arms apart and supported at rest. The keyboard units each incorporate electrical apparatus for providing electrical signals representative of data symbols associated with the keys. Additionally, certain keys are coded to provide control signals used in association with display means, a data processor, and a printer. The data processor may include computer memory capabilities as in the form of a floppy disc and is operated to process data as well as driving the display means and the printer.
REFERENCES:
patent: 2196987 (1940-04-01), Gaston
patent: 3305062 (1967-02-01), Kittredge
patent: 4064560 (1977-12-01), Baxter
"Digital X Typewriter Keyboard", Conway, IBM Tech. Discl. Bulletin, vol. 18, No. 12, May 1976, pp. 4187-4190.
"Interactive Teaching Aid for Typewriters", Cook, IBM Tech. Discl. Bulletin, vol. 22, No. 8A, Jan. 1980, p. 3285.
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