Programmable keyboard arrangements

Details Programmable keyboard arrangements Programmable keyboard arrangements

1974-06-12

1976-05-11

Trafton, David L.

Communications: electrical

Systems

With specific power supply

340166R, 340365R, 350160LC, G06F 302

Patent

active

039567451

ABSTRACT:
A programmable keyboard of the kind in which a member presents a plurality of discrete areas to a co-operating probe, each of which areas produces a unique signal when addressed by the probe, is provided with a liquid crystal display to identify the current function of a particular area. Separate additional addressable areas are provided by means of which one of a number of alternative display functions can be selected as desired.

REFERENCES:
patent: 3382588 (1968-05-01), Serrell et al.
patent: 3401470 (1968-09-01), Gaven
patent: 3482241 (1969-12-01), Johnson
patent: 3622224 (1971-11-01), Wysocki et al.
patent: 3673327 (1972-06-01), Johnson et al.
patent: 3707715 (1972-12-01), Perotto
patent: 3735395 (1973-05-01), Iwabuchi et al.
patent: 3757322 (1973-09-01), Barkan et al.

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