Which of the following is an advantage of use of multiplexers? I. Logic design…
2021
Which of the following is an advantage of use of multiplexers?
I. Logic design is simplified.
II. Minimizes IC package count.
III. Simplification of logic expression is not required.
- A.
I and II
- B.
II and III
- C.
I and III
- D.
I, II and III
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Correct answer: D
All three statements correctly describe the advantages of using multiplexers (MUX) in digital logic design.
I. Logic design is simplified: Multiplexers allow for a more structured approach to design by selecting one of many inputs, which is often more intuitive than building complex gates from scratch.
II. Minimizes IC package count: A single multiplexer IC can replace several discrete logic gates (AND, OR, NOT), reducing the physical footprint on a circuit board.
III. Simplification of logic expression is not required: When implementing a Boolean function with a MUX, you can directly connect variables to the select lines and constants (0 or 1) to the data inputs based on the truth table, bypassing the need for K-map or algebraic simplification.