BPSC Tre 4.0 Computer Science MCQ | Multiplexer(MUX)_Digital Logic

BPSC Tre 4.0 Computer Science MCQ | Multiplexer(MUX)_Digital Logic

Multiplexer (MUX)_Digital Logic  MCQ 1. A multiplexer is also known as: A. Data distributor B. Data selector C. Encoder D. Decoder Answer: B. Data selector Explanation:  A multiplexer selects one input from many and forwards it to a single output , hence called a data selector . 2. A multiplexer has: A. One input and many outputs B. Many inputs and many outputs C. Many inputs and one output D. One input and one output Answer: C. Many inputs and one output Explanation:  MUX → Many-to-One device. 3. How many select lines are required for a 4-to-1 multiplexer? A. 1 B. 2 C. 3 D. 4 Answer: B. 2 Explanation: Number of select lines = log2(Number of inputs) log ⁡ 2 ( 4 ) = 2 4. A 2-to-1 multiplexer has: A. 2 inputs, 1 output, 1 select line B. 2 inputs, 1 output, 2 select lines C. 1 input, 2 outputs, 1 select line D. 1 input, 1 output, 2 select lines Answer: A 5. Number of inputs in a multiplexer with 3 select lines is: A. 6 B. 8 C. 16 D. 32 Answer: B. 8 Explanation: Inputs = 2 n = 2 3 = 8 6. A multiplexer with 16 inputs will have ho…