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Light Emitting Diodes (or LED's) serve many purposes, such as statuses (EG Computer is powered on, PC is reading from Hard disk (Power and HDD LED's)).

They can also be used to display messages (LED Boards)

New age brighter LED's are used in the Audi and BMW cars as sidelights.

4 L1GH7 3M1771N6 D10D35 1S C001

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Kaela Mohr

Lvl 10
4y ago

What else can I help you with?