6
1-49. Perform the R’s-1 complement of the
following binary numbers.
(a) 1000, (b) 1101, (c) 0100
1. (a) 01112 (b) 00102 (c) 10112
2. (a) 01102 (b) 00112 (c) 10102
3. (a) 01112 (b) 00112 (c) 10112
4. (a) 01102 (b) 00102 (c) 10102
1-50. Which of the following statements
regarding the forming of the R’s
complement of a binary number is
correct?
1. Retain the MSD and complement all
other digits
2. Complement all digits and subtract 1
3. Complement all digits
4. Retain the least significant 1 and
complement all other digits to the left
1-51. Which of the following numbers is the R’s
complement of 1001012?
1.
1010102
2.
0110112
3.
1101102
4.
1010012
IN ANSWERING QUESTIONS 1-52 AND
1-53, USE THE R’S COMPLEMENT METHOD
TO SOLVE THE PROBLEMS.
1-52. Subtract:
10012
- 1012
1. 1102
2. 0102
3. 1002
4.
11002
1-53. Subtract:
11012
- 10102
1.
00012
2.
01002
3.
01102
4.
00112
1-54. In the previous problems, what is
indicated by the carry that expands the
difference by one place?
1. The answer is incorrect
2. The answer is a positive number
3. The answer is correct
4. The answer is a negative number
IN ANSWERING QUESTIONS 1-55
THROUGH 1-57, SOLVE THE
SUBTRACTION PROBLEMS AND
INDICATE THE SIGN OF THE
DIFFERENCE.
1-55. Subtract:
100102
- 100012
1. 000012 positive
2. 011112 negative
3. 011002 positive
4. 000012 negative
1-56. Subtract:
00012
- 11112
1. 00102 negative
2. 01112 positive
3. 11102 negative
4. 11112 positive
