a) Draw a logic diagram of an 8-1 multiplexer with eight 4-bit inputs and three control signals:
Inputs: I0 = 0000 Select signals:
I1 = 0100 S2
I2 = 0010 S1
I3 = 0001 S0
I4 = 1111
I5 = 1011
I6 = 1101
I7 = 1110
Note: Each output will be one of the 4-bit inputs as determined by the select signals.
b) For the 8-to-1 multiplexer above, draw a truth table showing the 4-bit outputs for each of the 8 input possibilities
Inputs: I0 = 0000 Select signals:
I1 = 0100 S2
I2 = 0010 S1
I3 = 0001 S0
I4 = 1111
I5 = 1011
I6 = 1101
I7 = 1110
Note: Each output will be one of the 4-bit inputs as determined by the select signals.
b) For the 8-to-1 multiplexer above, draw a truth table showing the 4-bit outputs for each of the 8 input possibilities
Select Signals
Output
S2
S1
S0
0
0
0
0000
1
1
1