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as passive, active , or electromechanic . the strict physics definition treats passive components as ones that cannot supply energy themselves, whereas a battery would be seen as an active component since it truly acts as a source of energy. however, electronic engineers who perform circuit analysis use
relay (ssr) slotted optical switch, opto switch, optical switch led display – seven-segment display , sixteen-segment display , dot-matrix display display technologies[ edit ] current: filament lamp (indicator lamp) vacuum fluorescent display (vfd) (preformed characters, segment , starburst) cathode ray...
https://en.wikipedia.org/wiki/Discrete_device