Logic for 2/1, 4/1 Muxes

I0

Y = I0 S’ + I1 S

S’

I1

S

Y

Y = I0 S1’ S0’ + I1 S1’ S0 + I2 S1 S0’ + I3 S1 S0

I0

S0’

S1’

I1

S0

S1’

I2

S0’

S1

I3

S0

S1

Y

S[1:0]

2

These are called COMBINATIONAL muxes.

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