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Digital Arithmetic Operations and Circuits

Q1: When performing subtraction by addition in the 2's-complement system:

A the minuend and the subtrahend are both changed to the 2's-complement.

B the minuend is changed to 2's-complement and the subtrahend is left in its original form.

C the minuend is left in its original form and the subtrahend is changed to its 2's-complement.

D the minuend and subtrahend are both left in their original form.

ANS:C - the minuend is left in its original form and the subtrahend is changed to its 2's-complement.

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