Physics · Digital Electronics
The steps for subtracting two positive numbers (M - N) using the (r - 1)'s complement method are: (A) Add the minuend M to the (r - 1)'s complement of the subtrahend N. (B) If an end carry occurs, add 1 to the least significant bit (end-around carry). (C) If an end carry does not occur, take the (r - 1)'s complement of the number obtained in step A and place a negative sign in front. (D) Take the (r - 1)'s complement of the number obtained in step B or step C. Choose the correct sequence/combination of valid statements from the options given below:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1(B), (C), (D) only
- 2(A), (C), (D) only
- 3(A), (B), (C) only✓
- 4(A), (B), (D) only
Correct answer
(A), (B), (C) only
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