Circuits: 4-1 Multiplexor

Boolean function:

z = \c1\c0x0 + \c1c0x1 + c1\c0x2 + c1c0x3

Could construct this from gates, or use existing building blocks (2-1 MUX):

c1

c0

z

0

0

x0

0

1

x1

1

0

x2

1

1

x3

c0 selects even or odd indicies

0: x0, x2

1: x1, x3

c1 selects larger or smaller

0: x0, x1

1: x2, x3