Membrane keyboard with identifying connectors

Details Membrane keyboard with identifying connectors Membrane keyboard with identifying connectors

1984-06-18

1986-12-02

Caldwell, Sr., John W.

Communications: electrical

Audible indication

Percussion-type sound producer

340365R, G06F 302, H04M 126

Patent

active

046268308

ABSTRACT:
A membrane keyboard is provided having a first and second plurality of connectors extending therefrom. The first plurality of connectors is attached at one end to a number of switches on the keyboard and at the other end to a processing circuit apart from the keyboard. One end of the second plurality of connectors is also connected to the processing circuit. A third set of connectors is utilized to connect the ends of the second plurality of connectors on the keyboard in a manner to identify the keyboard to the processing circuit.

REFERENCES:
patent: 3971925 (1976-07-01), Wenninger et al.
patent: 4030094 (1977-06-01), Anderson
patent: 4336529 (1982-06-01), Buan
patent: 4456972 (1984-06-01), Lee et al.
patent: 4516112 (1985-05-01), Chen
patent: 4545010 (1985-10-01), Salas et al.
M. Flinders--IBM Technical Disclosure Bulletin--vol. 24, No. 12, May 1982--p. 6231.

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