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ISM stands for _________

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+2 votes
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in Analog Communications by (122k points)
ISM stands for _________

(a) IEEE Standard Message

(b) Industrial, Scientific and Messaging

(c) Industrial, Scientific and Medical

(d) IEEE Secure Message

I have been asked this question in quiz.

My question comes from Reduction of Noise in section Modulation of Analog Communications

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Right choice is (c) Industrial, Scientific and Medical

To explain: ISM stands for Industrial, Scientific and Medical. In it some radio frequencies are only used for Industrial, Scientific and Medical purposes not for telecommunications purpose. Bluetooth uses ISM band.

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