Experiment 1 - The 2-to-1 Multiplexer

The 2-to1 multiplexer has two inputs (IN0 and IN1) as well as the selector input (A). With the selector input you switch one of the inputs to the output (OUT)...

Take a look at the truth table of a 2-to1 multiplexer...

With a few logic gates you build the 2-to-1 multiplexer...

Circuit diagram 2-to-1 multiplexer.

You understand the functionality of a 2-to-1 multiplexer easily with a switch analogy...

Illustration switch analogy 2-to-1 multiplexer.

Circuit symbol 2-to-1 multiplexer.

With the circuit shown you build the 2-to-1 multiplexer...

Circuit 2-to-1 multiplexer. (Enlarge)

Multiplexers are often abbreviated as MUX and hence a 2 input multiplexer as 2-to-1 MUX.

In the next experiment you take a look at a 4-to-1 multiplexer...