Circuits: 4-1 Multiplexor
Inputs:
Data: 4 (x0, x1, x2, x3)
Control: ceil (lg n) = 2 (c0, c1)
Output: 1 (z)
Condensed truth table: Row c1 c0 z
0 0 0 x0
1 0 1 x1
2 1 0 x2
3 1 1 x3
Boolean function: z = \c1\c0x0 + \c1c0x1 + c1\c0x2 + c1c0x3