A good answer might be:0011 1000 (incorrect)The integer to be subtracted is complemented: 0111 1000 ===> 1000 0111 + 1 ==> 1000 1000 ...then added to the other: 10000 000 1011 0000 == - 80d 1000 1000 == -120d --------- ----- 0011 1000 +56d !??!! Since the carry into the most significant column is NOT the same as the carry out, the result is not correct. |
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