Comparision Between Unsigned and Signed 2's Complement

If the carry bit is cleared, the subtrahend is greater than the minuend which generates a negative result, which is invalid in an unsigned system (ex. 8,10). Signed 2's Complement Binary Numbers. Positive numbers are identified by a most significant bit equal to 0, while negative numbers have most significant bits (MSBs) equal to 1 and with the ... ................
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