Integrated circuit output pins used for input signals

Details Integrated circuit output pins used for input signals Integrated circuit output pins used for input signals

1982-09-17

1985-08-27

Curtis, Marshall M.

Communications: electrical

Visual indication

Movable

340802, 340711, 340365S, 340782, G09G 300, G09G 332

Patent

active

045381461

ABSTRACT:
A circuit that monitors the LED driver output pins on an integrated circuit for quiescent moments and then uses those output pins, only during these moments, to strobe keys on a keyboard for input signals.

REFERENCES:
patent: 3918051 (1975-11-01), Bernin et al.
patent: 3990070 (1976-11-01), Spence
patent: 4188626 (1980-02-01), Frantz et al.

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