Micro-motion keyboard

Details Micro-motion keyboard Micro-motion keyboard

1987-01-05

1989-01-03

Caldwell, Sr., John W.

Coded data generation or conversion

Bodily actuated code generator

Including keyboard or keypad

200 5A, H04L 100, G06F 302

Patent

active

047960078

ABSTRACT:
A keyboard assembly is disclosed comprising a waterproof portion which includes a sheet of printed key tips mounted on a cover support member overlying an indicia sheet identifying the key tips, first and second switch-matrix electrical conductors separated by an insulator sheet mounted on printed circuit board, a plurality of light-emitting diodes mounted in the printed circuit board for selectively lighting one of the key tips when operated, a plurality of I.C. circuit elements secured to the lower surface of the printed circuit board and connected to the electrical conductors forming an electrical circuit associated with the operation of the keyboard and a key operated switching mechanism extending through the keyboard to sense light emitted from elements mounted in the lower surface of the printed circuit board for controlling the operating mode of the keyboard.

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