COMPUTER SCIENCE AND ENGINEERING
COMPUTER ORGANIZATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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None of the above
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Detailed explanation-1: -Whereas, 16x1 Multiplexer has 16 data inputs, 4 selection lines and one output.
Detailed explanation-2: -A 16 × 1 multiplexer has 16 inputs so if we use 4 × 1 multiplexers: At first stage: 4 multiplexers are needed for 16 inputs, At second stage: the output of these 4 multiplexers is connected to inputs of 1 multiplexer. Total 4 × 1 multiplexers needed are 4 + 1 = 5.
Detailed explanation-3: -16 to 1 Multiplexer The 2×1 multiplexer has only 1 selection line. For getting 16 data inputs, we need two 8 ×1 multiplexers. The 8×1 multiplexer produces one output. So, in order to get the final output, we need a 2×1 multiplexer.
Detailed explanation-4: -If a multiplexer has 4 selection pins, we know that the largest number used to reference an input pin can only have 4 bits. The largest possible 4 bit binary number is ‘1111’ which equals 16. This means a multiplexer with 4 selection pins is a 16:1 mux, since it has 16 input pins.
Detailed explanation-5: -A 4-to-1 multiplexer consists four data input lines as D0 to D3, two select lines as S0 and S1 and a single output line Y. The select lines S0 and S1 select one of the four input lines to connect the output line.