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suppose we have 50 control signal and suppose 49 control signals are active,

Q1:consider  horizontal micro programed control unit what is the length of control word in bits?

Q2: consider vertical micro programed control unit what is the length of control word in bits?

Any time horizontal >= Vertical

Here it should be strictly greater.

In case of vertical it doesn't bother how may signals are active it uses a decoder =>log(50)=6
so i saying that in verticle 6 bits per control signal ...... correct?

now if it correct then we have 49 cs which are active and for each one we need 49 sub control fields through which decoders are connected so why not 49*6 =249

and in horizontal 1 bit per control signal hence 50

now if it correct then we have 49 cs which are active and for each one we need 49 sub control fields through which decoders are connected so why not 49*6 =249

I did not understand that statement

But that was the problem of Vertical Micro Programming right if we have soo many active lines we can't use it so we have moved to Hybrid

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