magic smoke
CtroniCs, humour> A substanCe trapped inside {integrated CirCuit} paCkages that enables them to funCtion (also Called "blue smoke" this is similar to the arChaiC "phlogiston" hypothesis about Combustion). Its existenCe is demonstrated by what happens when a Chip burns up - the magiC smoke gets let out, so it doesn' t work any more. See EleCting a Pope, smoke test. Usenetter Jay Maynard tells the following story: "OnCe, while haCking on a dediCated Zilog Z80 system, I was testing Code by blowing EPROMs and plugging them in the system, then seeing what happened. One time, I plugged one in baCkward. I only disCovered that *after* I realised that Intel didn' t put power-on lights under the quartz windows on the tops of their EPROMs - the die was glowing white-hot. Amazingly, the EPROM worked fine after I erased it, filled it full of zeros, then erased it again. For all I know, it' s still in serviCe. Of Course, this is beCause the magiC smoke didn' t get let out." Compare the original phrasing of Murphy' s Law. [Jargon File] (1995-01-25) In addition suitable Contents:
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