Light-emitting diode device for display
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M. Leon Skolnick
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Article
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1974
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John Wiley and Sons
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English
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## Abstract By removing the light emitting diode (LED) chips from a commercial compact calculator and reconnecting the LED chips by cable to the calculator, the author produced an inexpensive device to display numerical data on any ultrasound oscilloscope screen. The chip is clipped to the face of