Multikey keyboard for inputting data into a computer

Details Multikey keyboard for inputting data into a computer Multikey keyboard for inputting data into a computer

1982-12-27

1985-11-26

Groody, James J.

Communications: electrical

Audible indication

Percussion-type sound producer

178 17C, 340365R, 34082579, G06F 302

Patent

active

045556938

ABSTRACT:
A multikey keyboard for inputting data into a computer, whose keys place in circuit the points of intersection of an X rank conductor and Y rank conductor matrix, characterized in that X rank and Y rank conductors are respectively connected together by interconnection resistors (R) and to an X output and Y output of the keyboard, intended to be connected to two analog inputs of the computer, so that the resistance values applied at the input of these two latter are representatively X rank and of the Y rank of any key pressed.

REFERENCES:
patent: 3304612 (1967-02-01), Proctor
patent: 3798370 (1974-03-01), Hurst
patent: 3921165 (1975-11-01), Dym
patent: 4015254 (1977-03-01), Strandt
patent: 4164622 (1979-08-01), Pobgee
patent: 4241333 (1980-12-01), Giebler
patent: 4319078 (1982-03-01), Yokoo
patent: 4336529 (1982-06-01), Buan
patent: 4429301 (1984-01-01), Crumley
patent: 4435616 (1984-03-01), Kley
patent: 4440990 (1984-04-01), Nozaki

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