National Semiconductor LM3915N-1 Log LED Bar/dot Display Driver

LED - Light Emitting Diode - a small light source

Analogue - A continuous signal in time with fluctuations in a measurable parametre to provide a signal

LED - Light Emitting Diode. A bulb that is very efficient at producing light. Often small.

Vacuum - An area which does not have any matter in it.

Voltage - A measurement of volts.

Vacuum - A space, void, containing no matter

Vacuum - A consumer device utilising an air pump to create a vacuum which sucks up dust and dirt.

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