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Question
Which of the following flip-flops is free from race around problem?
Options
A. T flip-flop
B. SR flip-flop
C. master slave JK flip-flop
D. All of the above
E. None of the above
Correct Answer
master slave JK flip-flop
Digital Computer Electronics problems
Search Results
1. The time required for a pulse to decrease from 90 to 10 percent of its maximum value is known as
Options
A. rise time
B. decay time
C. binary level transition period
D. propagation delay
E. None of the above
Show Answer
Scratch Pad
Discuss
Correct Answer: decay time
2. Conversion of decimal number 67
10
to it's octal number equivalent is
Options
A. 100
8
B. 103
8
C. 109
8
D. 99
8
E. None of the above
Show Answer
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Discuss
Correct Answer: 103
8
3. How many inputs signals can a gate have?
Options
A. one
B. more than one
C. two only
D. both (a) and (b)
E. None of the above
Show Answer
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Discuss
Correct Answer: both (a) and (b)
4. A positive AND gate is also a negative
Options
A. NAND gate
B. NOR gate
C. AND gate
D. OR gate
E. None of the above
Show Answer
Scratch Pad
Discuss
Correct Answer: OR gate
Explanation:
5. An OR gate can be imagined as
Options
A. switches connected in series
B. switches connected in parallel
C. MOS transistors connected in series
D. All of the above
E. None of the above
Show Answer
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Discuss
Correct Answer: switches connected in parallel
6. What logic function is obtained by adding an inverter to the inputs of an AND gate?
Options
A. OR
B. NAND
C. XOR
D. NOR
E. None of the above
Show Answer
Scratch Pad
Discuss
Correct Answer: NOR
7. A NOR gate has two or more input signals. All input must be _____ to get a high output
Options
A. low
B. high
C. some low some high
D. 1's
E. None of the above
Show Answer
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Discuss
Correct Answer: low
8. What is the 2's complement of 0011 0101 1001 1100 number?
Options
A. 1100 1010 1100 1011
B. 1100 1010 0110 0011
C. 1100 1010 0110 0100
D. 1100 1010 1111 1111
E. None of the above
Show Answer
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Correct Answer: 1100 1010 0110 0100
9. Conversion of an octal number 112
8
to hexadecimal number is
Options
A. 4A
16
B. 5A
16
C. 15
16
D. 20
16
E. None of the above
Show Answer
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Discuss
Correct Answer: 4A
16
10. Conversion of binary number 101000010111
2
to hexadecimal number is
Options
A. D8F9
16
B. A8B9
16
C. A17
16
D. D9F8
16
E. None of the above
Show Answer
Scratch Pad
Discuss
Correct Answer: A17
16
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