Apparatus using three light emitting diodes (LEDs) and a transis

Details Apparatus using three light emitting diodes (LEDs) and a transis Apparatus using three light emitting diodes (LEDs) and a transis

1994-03-21

1996-04-30

Lee, Thomas C.

Excavating

371 3, 371 221, 364579, 326 30, 326 90, G06F 1132

Patent

active

055133738

ABSTRACT:
In a computer system having a computer connected to peripheral devices, an illumination device is connected via a termination data line to a selected peripheral device. The illumination device provides illumination when current is supplied via the termination data line, thereby indicating the presence of at least one terminator in the peripheral devices. A second illumination device may be connected to the selected peripheral device via an overtermination data line and a termination power line for indicating the presence of more than one terminator among the peripheral devices when current supplied via the overtermination data line exceeds a threshold amount. A third illumination device may also be connected via the termination power line for indicating the presence of termination power when current is supplied via the termination power line.

REFERENCES:
patent: 3976849 (1976-08-01), Champan
patent: 4118690 (1978-10-01), Paynton
patent: 4564728 (1986-01-01), Romano
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patent: 4756017 (1988-07-01), Bush
patent: 4829289 (1989-05-01), Kallman et al.
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patent: 4906938 (1990-03-01), Konopka
patent: 4920555 (1990-04-01), Ingalsbe
patent: 5239559 (1993-08-01), Brach et al.
patent: 5422580 (1995-06-01), Mandel et al.

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