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SampleCircuit - Unsigned overflow Signed/— overflow...

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Unformatted text preview: Unsigned + overflow Signed +/— overflow Negate b overflow input1 input2 inputs -> controlo Multiplexer 4 controh output 0 ' + 00 = unsigned addition 01 = signed addition 10 = signed subtraction 11 = negate b (ignore a) This circuit illustrates the use of a multiplexer by computing an "overflow" bit for four types of operations an adder may have been used to perform, and then selecting the correct overflow bit (according to the value of the two control bits coming into the multiplexer from the left). ...
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