
Project 17: Multiplexer
A
Q
B
S represents the Selector
Equals A when S=1
Equals B when S=0
S
Input (A) Input (B) Input (S) Output (Q)
0 or 1 0 0 0
0 or 1 1 0 1
0 0 or 1 1 0
1 0 or 1 1 1
Multiplexers are often used as switches (e.g. telephone line switch, HDMI switch, etc.).
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3
4
1
2
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