Parallel adder is
Answer: B
Adder is a combinational circuit.
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A presettable counter with 4 flip flops can start counting from
Answer: D
Since 4 flip-flops are used it can count from 0000 to 1111. By presetting it can start from any number.
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The number of bits in ASCII is
Answer: D
ASCII is a 7 bit code.
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Decimal 43 in hexadecimal and BCD number system is respectively.
Answer: B
(43)10 = (2B)16
(43)10 = (01000011)2 .
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The basic storage element in a digital system is
Answer: A
Storing can be done only in memory and flip-flop is a memory element.
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Which of the following is not a characteristic of a flip flop?
Answer: D
Flip-flop has more than 1 input.
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An AND gate has two inputs A and B and one inhibit input 3, Output is 1 if
Answer: B
All AND inputs must be 1 and inhibit 0 for output to be 1.
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Binary number 1101101101 is equal to decimal number
Answer: A
2048 + 1024 + 128 + 64 + 16 + 8 + 1 = 3289 in decimal.
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The initial state of MOD-16 down counter is 0110. What state will it be after 37 clock pulses?
Answer: D
A mod-16 counter goes through 16 states in one cycle of 16 Pulses.
It complete 2 cycles in 32 Pulses.
In the rest 5 Pulses, it moves down from 0110 = 610 - 510 = 110 or (001)2 .
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The hexadecimal number (3E8)16 is equal to decimal number
Answer: A
No Explanation.
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