Data entry devices

Details Data entry devices Data entry devices

1976-08-30

1978-02-28

Scott, James R.

Communications: electrical

Audible indication

Percussion-type sound producer

260 1R, 200 5A, 200317, 200DIG29, 273 1M, G08C 100, H01H 900

Patent

active

040770362

ABSTRACT:
Apparatus for generating coded signals commensurate with information to be entered into associated equipment includes a matrix of magnetically operated switches. The switches are disposed beneath a generally planar data entry area and transparent indicia bearing overlays are received on the data entry area; the overlays including target points aligned with individual switches and there typically being fewer target points than switches whereby the overlay has space for the indicia and a plurality of overlays are utilized to take full advantage of the capability of the matrix. The apparatus may also include light emitting devices associated with the switches to provide operator feedback or guidance.

REFERENCES:
patent: 2998973 (1961-09-01), Schaper
patent: 3261941 (1966-07-01), Schlesinger, Jr.
patent: 3437770 (1969-04-01), Piernik
patent: 3474366 (1969-10-01), Barney
patent: 3767869 (1973-10-01), Lucas et al.
patent: 3811025 (1974-05-01), Bach
G. G. Promis et al, IBM Tech. Disc. Bull.; "Control Panel", vol. 19, No. 2, July 1976, pp. 405-406.
T. F. Cummings; IBM Tech. Disc. Bull.; "Bull Switch", vol. 15; No. 7; Dec. 1972; pp. 2207, 2208.

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