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1. Imagine you have a 2-bit ALU, show that using an XOR gate to test the last two carries (the carry in to the MSB
1. Imagine you have a 2-bit ALU, show that using an XOR gate to test the last two carries (the carry in to the MSB and the carry out the MSB is sufficient to detect overflow. Don't do a formal proof, just consider the all possibilities for Carry-In and Carry-Out of the MSB
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