In the context of MUX applications, what does a MUX allow in terms of control?

Question

Question

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RRB JE CBT 2 (Electronics Engineering) ReExam Official Paper (Held On: 04 Jun, 2025)

Answer 1

Multiplexer:

A multiplexer (MUX) is a combinational logic circuit designed to switch one of several inputs to a single common output line.
A multiplexer is Many to One data selector
A multiplexer selects one of the many data available at its input depending on the bits on the select line
For 2n inputs, there are n select lines that determine, which input is to be connected to the output.

Example:

A 4-input multiplexer is as shown below.

F1 U.B Madhu 27.03.20 D8

Output, Y = I0S̅1S̅0 + I1S̅1S0 + I2S1S̅0 + I3S1S0