Kenn Thyrsted Nielsen wrote: > > SNIP > >Trivia quiz: Does anyone remember how the Light Emitting > >Diodes (LED) produce light? No credit if you have to look > >it up...... > > > SNIP > > Like all other semiconductors the LED uses smoke: If it gets out it stops > working. :) Seems to me that the SED was a precursor of the LED....;o) Enough of the thread drift! GT