Texas Instruments ULN2803ADWG4 Darlington Driver SO18

LED - Light Emitting Diode - a small light source

Hammer - A tool used for providing impact to an object such as a nail

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

Voltage - A measurement of volts.

Feature - An attribute that makes something stand out.

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