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• Galalith
  ...to develop white school boards that could be wiped off but that would not burn, as German teachers no longer wanted to write on [[Chalkboard|blackboards]] ...or pens, umbrella handles, white piano keys (replacing natural ivory), and electrical goods,<ref>{{citebook|author=Otto|title=Stone from milk. Ascent and fall of
  6 KB (827 words) - 19:38, 13 October 2010
• Reliability (semiconductor)
  ...|shock]], [[radiation]], [[pressure]], and intensity of [[magnetic]] and [[electrical]] fields. ...uipment. [[Wafer testing]] tests the packaged device, often pre-, and post burn-in for a set of parameters that assure operation. Process and design weakne
  6 KB (779 words) - 14:48, 10 December 2011
• Digital electronics
  ...lectronics)|signals]] by discrete bands of [[analog electronics|analog]] [[Electrical potential|levels]], rather than by a continuous range. All levels within a The output of a logic gate is an electrical [[Electrical current|flow]] or voltage, that can, in turn, control more logic gates.
  33 KB (4,939 words) - 14:49, 10 December 2011

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