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Digital Electronics

Q1: A digital system is required to amplify a binary encoded audio signal. The user should be able to control the gain of the amplifier from a minimum to a maximum in 100 increments. The minimum number of bits required to encode, in straight binary is,

A 8

B 6

C 5

D 7

ANS:D - 7

Let 6 bit required = 26 = 64, which indicate 64 increment. If 7 bit = 27 = 128, for 100 increment, 7 bit required.



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