Digital display testing circuit

Details Digital display testing circuit Digital display testing circuit

1981-04-30

1984-06-05

Tokar, Michael J.

Electricity: measuring and testing

Electric lamp or discharge device

324 73AT, 324409, G01R 31024

Patent

active

044531281

ABSTRACT:
A circuit for testing a segment of a digital display comprising a segment of a digital display having a cathode filament for conducting electrical current and for emitting electrons, and detecting means connected to the cathode filament for detecting electrical current flow across it. Also provided is a method for testing the proper operation of characters or digits of a digital display.

REFERENCES:
patent: 1718557 (1925-03-01), Hickok
patent: 3761766 (1973-09-01), Hatano et al.
patent: 4158431 (1979-06-01), van Bavel et al.
patent: 4158794 (1979-06-01), Sandler

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