RTL Design Engineer Interview Questions and Answers for Freshers

Mux and De-Mux can be used to implement logic gates.

• Mux can be used to implement OR gate by selecting one of the inputs.

• De-Mux can be used to implement AND gate by selecting one of the outputs.

• Mux and De-Mux can be used together to implement any logic gate.

• Mux and De-Mux can also be used to implement arithmetic circuits like adders and multipliers.

A 4 to 1 multiplexer can be implemented using two 2 to 1 multiplexers.

• Connect the select inputs of the two 2 to 1 multiplexers to the two most significant bits of the 4 to 1 multiplexer.

• Connect the data inputs of the two 2 to 1 multiplexers to the corresponding data inputs of the 4 to 1 multiplexer.

• Connect the outputs of the two 2 to 1 multiplexers to the two inputs of a third 2 to 1 multiplexer.

• Connect the output of the third 2 to 1 multiplexer to the output of the 4 to 1 mu...read more