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Control Unit

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Consider a microprogrammed control unit has to support 32 number of instructions. For each instruction execution control unit generate a sequence of 64 control words. Each micro instruction contains 3 fields: 118 control signals to support horizontal control unit, a MUX select field to select one of 8 inputs, and a next address field. The size of control memory needed is?

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it supports horizontal control unit we need 1 but for each signal  which accounts to 118 bits

The MUX to select any of the 8 i/p lines will have log(8) =3 select lines ...
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