The Adder/Subtractor includes a “switch" which is a set of multiplexors. Assume registers A and B are 32-bits each. a. What is the size of each MUX (number of inputs, number of selector bits). b. How many MUXes are needed? c. How many total selector bits are sent to the adder/subtractor?

The Adder/Subtractor includes a “switch" which is a set of multiplexors. Assume registers A and B are 32-bits each. a. What is the size of each MUX (number of inputs, number of selector bits). b. How many MUXes are needed? c. How many total selector bits are sent to the adder/subtractor?

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Chapter3: Supporting Processors And Upgrading Memory

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I got 2 inputs and 1 selector bit for A, but dont understand how I would get B or C

The Adder/Subtractor includes a "switch" which is a set of multiplexors. Assume registers A
and B are 32-bits each.
a. What is the size of each MUX (number of inputs, number of selector bits).
b. How many MUXes are needed?
c. How many total selector bits are sent to the adder/subtractor?

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