Smart multiple switch scanner, single wire bus multiplex system

Details Smart multiple switch scanner, single wire bus multiplex system Smart multiple switch scanner, single wire bus multiplex system

1989-07-31

1991-07-30

Weldon, Ulysses

Coded data generation or conversion

Bodily actuated code generator

Including keyboard or keypad

341 22, H03K 1794

Patent

active

050363204

ABSTRACT:
A smart multiplex scanner system for scanning a matrix of switches utilizes counter of a chosen modulo value that counts to that chosen value for generating row and column enable signals that are used to sequentially scan the switches of the matrix.

REFERENCES:
patent: 4343216 (1982-08-01), Swain et al.
patent: 4706068 (1987-11-01), Eberhard
patent: 4872008 (1989-10-01), Ohtsuka et al.
patent: 4884070 (1989-11-01), Hannaford

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