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Digital Electronics Test 2

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Digital Electronics Test 2
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  • Question 1
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    How many 4-input Mux are needed to implement a 256-input mux and how many levels will there be?
    Solution

    \({\rm{Level}} - 1:\frac{{256}}{4} = 64\)

    \({\rm{Level}} - 2:\frac{{64}}{4} = 16\)

    \({\rm{Level}} - 3:\frac{{16}}{4} = 4\)

    \({\rm{Level}} - 4:\frac{4}{4} = 1\)

    Total there are 4-levels

    Total number of 4-input Mux needed = 64 + 16 + 4 + 1 = 85
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