Computer Arithmetic MCQ Questions
Computer Arithmetic MCQs : This section focuses on "Computer Arithmetic" in Computer Organization & Architecture. These Multiple Choice Questions (MCQ) should be practiced to improve the Computer Organization & Architecture skills required for various interviews (campus interviews, walk-in interviews, company interviews), placements, entrance exams and other competitive examinations.
1. Sign magnitude is a very simple representation of ?
A. Positive number
B. Negative numbers
C. Infinity
D. Zero
View Answer
Ans : B
Explanation: Sign magnitude is a very simple representation of negative numbers
2. Sign bit 1 represents
A. Positive number
B. FALSE
C. TRUE
D. Negative Number
View Answer
Ans : D
Explanation: Sign bit 1 represents negative sign. Sign bit 0 represents positive sign.
3. Which of the following is true about Normalization?
A. Floating point numbers are usually normalized
B. Exponent is adjusted so that leading bit (MSB) of mantissa is 1
C. Since it is always 1 there is no need to store it
D. All of the above
View Answer
Ans : D
Explanation: All of the above is true.
4. The logic 1 in positive logic system is represented by ?
A. Zero voltage
B. Lower voltage level
C. Higher voltage level
D. Negative voltage
View Answer
Ans : C
Explanation: The logic 1 is represented by higher voltage while 0 is represented as low voltage.
5. The m-bit parallel adder consists of
A. m full adders
B. m+1 full adders
C. m-1 full adders
D. m/2 full adders
View Answer
Ans : A
Explanation: The m-bit parallel adder consists of m full adders.
6. Half adder is an example of
A. Combinational Circuits
B. Sequential Circuits
C. Asynchronous Circuits
D. Synchronous Circuits
View Answer
Ans : A
Explanation: Combinational circuits are the circuits whose output depends on the inputs of the same instant of time.
7. Master slave flip flop is also referred to as ?
A. Level triggered flip flop
B. Pulse triggered flip flop
C. Edge triggered flip flop
D. None of the above
View Answer
Ans : B
Explanation: The term pulse triggered means the data is entered on the rising edge of the clock pulse, but the output does not reflect the change until the falling edge of clock pulse
8. In J-K flip flop the function K=J is used to realize ?
A. D flip flop
B. S-R flip flop
C. T flip flop
D. Master slave flip flop
View Answer
Ans : D
Explanation: T flip flop allows the same inputs. So if in JK flip flop J = K then it will work as T flip flop.
9. What is the hexadecimal equivalent of a binary number 10101111 ?
A. AB
B. AC
C. AF
D. AD
View Answer
Ans : C
Explanation: Hexadecimal equivalent of a binary number 10101111 is AF
10. In a positive edge triggered JK flip flop, a low J and low K produces ?
A. High state
B. Low state
C. toggle state
D. No change
View Answer
Ans : D
Explanation: In JK Flip Flop if J = K = 0 then it holds its current state. There will be no change
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