Demultiplexer function Most demultiplexers (DEMUX) are used to facilitate which general kind of signal conversion in digital systems?

Introduction / Context:
A demultiplexer routes a single input signal to one of many outputs based on select lines. It is the functional inverse of a multiplexer and is used in applications such as address decoding, time-division distribution, and controlled signal routing.

Given Data / Assumptions:

• One data input line.
• Multiple output lines (typically 2^n for n select lines).
• Selection determined by binary control inputs.

Concept / Approach:
The DEMUX takes a single input and directs it to one of many output lines, leaving the others inactive. Therefore, the broad conversion is “1-to-N,” or single-input to multiple-outputs. It does not change number bases, perform analog power conversion, or parity transformation by itself (though it may be used within larger systems that do).

Step-by-Step Solution:

Verification / Alternative check:
Consult a 1-to-8 DEMUX truth table: when S2S1S0 = k, only Yk follows the input; all other Y lines are inactive. Simulation will show the single signal appearing on different outputs as the select code changes.

Why Other Options Are Wrong:

• decimal-to-hexadecimal: Number base conversion is done by encoders, decoders, or arithmetic logic, not a DEMUX.
• ac to dc: That is power conversion, not a logic function.
• odd parity to even parity: A parity generator/checker performs parity operations, not a DEMUX.

Common Pitfalls:
Confusing DEMUX with decoder: a decoder activates one output but does not route a data input; a DEMUX both selects and routes the data.

Final Answer:
single input, multiple outputs