Digital voltmeter with variable color background

G - Physics – 01 – R

Patent

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324/59, 324/68

G01R 13/02 (2006.01) G01R 13/40 (2006.01) G08B 5/36 (2006.01) G09G 3/14 (2006.01) G09G 3/16 (2006.01)

Patent

CA 1257335

DIGITAL VOLTMETER WITH VARIABLE COLOR BACKGROUND ABSTRACT OF THE DISCLOSURE A digital voltmeter includes a display device surrounded by a variable color background area for indicating measured voltage in a digital format. The color of the background area is controlled in accordance with the significance of measured voltage.

553534

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