Medium
EST. TIME: 45 minMultiplexer and Demultiplexer
To design and verify the truth table of Multiplexer and Demultiplexer circuits.
Theory
Multiplexer (74151/74153): "Many to One". Selects one of many input signals and sends it to the output. Controlled by Select lines.
Demultiplexer (74155/74138): "One to Many". Takes one input and steers it to one of many outputs based on Select lines.
Procedure
- Mux (4:1): Connect 4 data inputs and 2 select lines. Change select lines to pass specific data input to output.
- Demux (1:4): Connect 1 data input and 2 select lines. verify data appears on selected output line.