Magic Smoke

Magic Blue Smoke Monster

Magic smoke (also called factory smoke or blue smoke) is a tongue in cheek reference to smoke produced by malfunctioning electronic circuits. Smoke is frequently observed to come out of electronic components when overheated. According to the joke, manufacturers put a portion of magic smoke into every electronic component, and the device functions normally so long as the smoke does not escape.

The origins of the magic smoke have become a running joke that started among electrical engineers and technicians before it was more recently adopted by computer programmers. The actual origin of blue smoke is the black plastic epoxy material that is used to package most common semiconductor devices such as transistors and integrated circuits, which produces a bluish colored smoke during combustion.

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