Question

One multiplexer can take the place of ___________

(a) Several SSI logic gates

(b) Combinational logic circuits

(c) Several Ex-NOR gates

(d) Several SSI logic gates or combinational logic circuits

I had been asked this question in examination.

I want to ask this question from Multiplexers (Data Selectors) topic in chapter Combinational Circuits of Digital Circuits

Answer 1

Right answer is (d) Several SSI logic gates or combinational logic circuits

For explanation: A multiplexer (or MUX) is a device that selects one of several analog or digital input signals and forwards the selected input into a single line, depending on the active select lines. Since many operational behaviour can be performed by using a multiplexer. Whereas, a combinational circuit is a combination of many logic gates which makes the circuit more complex.