MCQ IN COMPUTER SCIENCE & ENGINEERING

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COMPUTER SCIENCE AND ENGINEERING

COMPUTER ORGANIZATION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
A 1:8 DMUX uses ____ (number) of select lines.
A
2
B
3
C
4
D
8
Explanation: 

Detailed explanation-1: -A 1 to 8 demultiplexer consists of one input line, 8 output lines and 3 select lines.

Detailed explanation-2: -To implement the 1×8 de-multiplexer, we need two 1×4 de-multiplexer and one 1×2 de-multiplexer. The 1×4 multiplexer has 2 selection lines, 4 outputs, and 1 input. The 1×2 de-multiplexer has only 1 selection line. For getting 8 data outputs, we need two 1×4 de-multiplexer.

Detailed explanation-3: -We know that 8x1 Multiplexer has 8 data inputs, 3 selection lines and one output.

Detailed explanation-4: -A 1-to-4 demultiplexer has a single input (D), two selection lines (S1 and S0) and four outputs (Y0 to Y3).

Detailed explanation-5: -The 8×1 multiplexer has 3 selection lines, 4 inputs, and 1 output. The 2×1 multiplexer has only 1 selection line.

There is 1 question to complete.
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