BPSC Tre 4.0 Computer Science MCQ | Demultiplexer(DEMUX)_Digital Logic

BPSC Tre 4.0 Computer Science MCQ | Demultiplexer(DEMUX)_Digital Logic

Demultiplexer(DEMUX)_Digital Logic MCQ A demultiplexer is a combinational digital logic circuit that routes a single input to one of several outputs based on select lines. 1. A demultiplexer is also known as: A. Data selector B. Data distributor C. Encoder D. Decoder Answer: B. Data distributor Explanation:  DEMUX distributes one input to one of many outputs , so it’s called a data distributor . 2. A demultiplexer has: A. Many inputs and one output B. One input and many outputs C. Many inputs and many outputs D. One input and one output Answer: B 3. DEMUX is a: A. Sequential circuit B. Memory device C. Combinational circuit D. Clocked circuit Answer: C Explanation:  DEMUX output depends only on current input and select lines , not past values. 4. A 1:4 demultiplexer has: A. 4 inputs and 1 output B. 1 input and 4 outputs C. 2 inputs and 2 outputs D. 4 inputs and 2 outputs Answer: B 5. Number of select lines required for a 1:8 DEMUX is: A. 1 B. 2 C. 3 D. 8 Answer: C Explanation: Select lines = log ⁡ 2 ( outputs ) = log ⁡ …