How many select lines are required for an 8-to-1 multiplexer?

Asked In: BPSC TRE 3.0

Options

  • A. 2
  • B. 3
  • C. 4
  • D. More than one of the above
  • E. None of the above

Correct Answer (Detailed Explanation is Below)

B. 3

Detailed Explanation

Correct Answer: (B) 3
The number of select lines required for a multiplexer is given by n = log₂(N), where N is the number of input lines. For an 8-to-1 MUX, log₂(8) = 3 select lines.