Microprogrammed Control Q.17

0. Suppose an instruction set architecture of a general-purpose machine has a total of 126 control signals. The number of bits required in control word for horizontal and vertical micro-instruction encoding are:

Answer
Comment
Array

Option : A
Explanation : For horizontal encoding, one bit is used for each control signal; therefore, we shall require 126 control signals.
For vertical encoding, the 126 control signals can be encoded in ceiling(log₂ 126) = 7 bits.

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