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| LED (A semiconductor device that converts electrical energy into light, used, for example, for the activity lights on computer disk drives. Light-emitting diodes work on the principle of electroluminescence and are highly efficient, producing little heat for the amount of light output) | |||
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LED : 10 phrases, 4 sujets |
| Antennes et guides d'ondes | 3 |
| Communications | 2 |
| Électronique | 4 |
| Transport | 1 |