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Which devices are used as indicators in a digital system?(a) LCD(b) LED(c) Varactor diode(d) Gunn diodeThis question was posed to me by my school principal while I was bunking the class.My question is taken from Power Controls in chapter Interfacing to the Analog World of Embedded Systems

Answer»

The correct option is (b) LED

Easy EXPLANATION: The light emitting diodes are USED as INDICATORS in the DIGITAL system and can be directly driven from a logic output.



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