Computer Organization & Architecture (3140707) MCQs

MCQs of Computer Arithmetic

Showing 1 to 10 out of 30 Questions
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1.
Most computers use the _______________ representation when performing arithmetic operations with integers.
(a) signed-magnitude
(b) signed-1's complement
(c) signed-2's complement
(d) any of the above
Answer:

Option (c)

2.
How many different operations can be possible when two signed-magnitude numbers are added or subtracted?
(a) 4
(b) 8
(c) 16
(d) 10
Answer:

Option (b)

3.
When two equal singed-magnitude numbers are subtracted, the result should be?
(a) +0
(b) -0
(c) 0
(d) Can't find exact answer
Answer:

Option (a)

4.
Add the two magnitudes when the signs of A & B are ________ in addition algorithm and _________ in subtraction algorithm.
(a) identical, identical
(b) different, identical
(c) different, different
(d) identical, different
Answer:

Option (d)

5.
In addition-subtraction algorithm, AVF means?
(a) add value to flip-flop
(b) add-overflow flip-flop
(c) add value of flag
(d) none of above
Answer:

Option (b)

6.
In addition-subtraction algorithm, after performing add/subtract operation on A & B numbers, the intermediate result will be stored in?
(a) EA
(b) A
(c) AB
(d) EB
Answer:

Option (a)

7.
Which of the following is examined after performing subtraction to check whether it is A > B or A < B or A = B?
(a) A
(b) AVF
(c) E
(d) B
Answer:

Option (c)

8.
Find the value of AVF after performing 1 011111 + 1 101101. Here leftmost bit represents the sign bit.
(a) 0
(b) 1
(c) X (don't care)
(d) Missing data
Answer:

Option (b)

9.
In multiplication algorithm, initially the multiplicand is in B and the multiplier in Q. The result of x-oring between Qs and Bs will be stored in?
(a) As
(b) Qs
(c) Bs
(d) Both A & B
Answer:

Option (d)

10.
If Q is 10-bit signed-magnitude number, then value of SC at initial phase of multiplication process?
(a) 9
(b) 10
(c) 11
(d) 8
Answer:

Option (a)

Showing 1 to 10 out of 30 Questions
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