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Digital Computer Electronics(Computer Science ) Questions and Answers
Home
Topic
Computer Science
Digital Computer Electronics
Question 1.
Which of the following is a universal gate?
AND
OR
EX-OR
NAND
None of the above
Explanation:-
Answer: Option D. ->
NAND
Question 2.
The number of input words in a truth table always equals _____ where n is the number of inputs bits.
10n
2n
4n
8n
None of the above
Explanation:-
Answer: Option B. ->
2n
Question 3.
Conversion of decimal number 6110 to it's binary number equivalent is
1111012
1111002
1100112
0011012
None of the above
Explanation:-
Answer: Option A. ->
1111012
Question 4.
Multiplication of 478 by 528 is
(3144)8
(4147)8
(3146)8
(3184)8
None of the above
Explanation:-
Answer: Option C. ->
(3146)8
Question 5.
Which of the following boolean algebra statements represent commutative law
(A+B)+CA+(B+C)
A.(B+C)(A.B)+(A.C)
A+BB+A
A+AA
None of the above
Explanation:-
Answer: Option C. ->
A+BB+A
Question 6.
Binary-Coded-decimal (BCD) numbers express each digit as a _____
byte
nibble
bit
All of the above
None of the above
Explanation:-
Answer: Option B. ->
nibble
Question 7.
Computers use thousands of flip-flops. To coordinate the overall action, a common signal called the _____ is sent to each flip-flop.
latch
clock
master
slave
None of the above
Explanation:-
Answer: Option B. ->
clock
Question 8.
Conversion of decimal number 9310 to hexadecimal number is
2D16
5D16
6216
3116
None of the above
Explanation:-
Answer: Option B. ->
5D16
Question 9.
Conversion of decimal number 9910 to it's octal number equivalent is
1218
1438
1248
1198
None of the above
Explanation:-
Answer: Option B. ->
1438
Question 10.
The 2's compliment of binary number 0.01011 is:
1.10101
0.10101
1.101
0.101
None of the above
Explanation:-
Answer: Option A. ->
1.10101
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