, an input wire.
It produces two outputs:
x0
and
x1
, the demultiplexed signals. It works like this:
•
When
s
= 0,
x0
outputs the value of
y
, and
x1
outputs LOW.
•
When
s
= 1,
x1
outputs the value of
y
, and
x0
outputs LOW.
TODO (pre-lab): Fill in a truth table for the demultiplexer.
s
y
x0
x1
0
0
0
0
0
1
1
0
1
0
0
0
1
1
0
1
3
CPSC 121
Lab 4
TODO (pre-lab): Provide a circuit diagram for a 1-to-2 demultiplexer repre-sented by the truth table above.Your diagram should use specific gates, it should NOT be the symbol shown below.
TODO (pre-lab): Provide a diagram of how you could make a 1-to-4 demulti-plexer using 1-to-2 demultiplexers (the symbol shown above).
4
CPSC 121
Lab 4
The table below shows which output returns the value ofyfor different values ofselect1andselect0. Your diagrammustagree with the table.select1select0output that returns y00x001x110x211x3
5
