Terminology – another widely used name for a multiplexer, highlighting its function of choosing one of several data inputs, is ________.

Introduction / Context:
Multiplexers (MUXes) are MSI devices that select one of many data inputs and forward it to a single output under the control of select lines. Industry literature and textbooks often use an alternative descriptive name that emphasizes this selection behavior. Knowing synonyms helps you recognize the same function across different vendors and families.

Given Data / Assumptions:

• A MUX has N data inputs, log2(N) select inputs, and one output.
• Exactly one data input is routed at a time, determined by the select code.
• Enable pins may exist to gate the function.

Concept / Approach:
Because the essential action of a multiplexer is to select which data input reaches the output, “data selector” is a natural synonym. This distinguishes it from decoders (code → one-of-N outputs), encoders (one-of-N inputs → code), and code converters (map one code set to another). Recognizing the synonym avoids confusion when reading datasheets, where “8-channel data selector” and “8-to-1 multiplexer” refer to the same hardware primitive.

Step-by-Step Solution:

Verification / Alternative check:
Compare datasheets: 74HC151 is called an “8-channel data selector/multiplexer,” illustrating the interchangeable terminology.

Why Other Options Are Wrong:
An encoder/decoder performs code translation; a code converter maps between code sets; “priority filter” is not a standard digital MSI term.

Common Pitfalls:
Confusing a MUX’s routing role with decoding; assuming MUXes inherently change codes—they do not, they forward one selected input.

Final Answer:
data selector