Multiple choice

What is the largest number of data inputs which a data selector with two control inputs can have?

  1. Two

  2. Four

  3. Eight

  4. Sixteen
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

With 2 control lines, we can select 2^2 = 4 different data inputs (00, 01, 10, 11). Each unique control combination selects one input line. This is why n control lines can address 2^n inputs in a multiplexer.

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