Q. A 4 bit ripple counter uses flip flops with propagation delay of 50 ns each. The maximum clock frequency which can be used is

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Q. An AND gate has two inputs A and B and one inhibit input S. Out of total 8 input states, output is 1 in

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Q. 268₁₀ = __________ .

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Q. In a JK Master slave flip flop

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Q. A pulse train with a 1 MHz frequency is counted using a 1024 modulus ripple counter using JK flip flops. The maximum propagation delay for each flip-flop should be

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Q. What will be maximum input that can be converted for a 6 bit dual slope A/D converter uses a reference of -6v and a 1 MHz clock. It uses a fixed count of 40 (101000).

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Q. If number of information bits is 11, the number of parity bits in Hamming code is

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Q. The number of digit 1 present in the binary representation of 3 x 512 + 7 x 64 + 5 x 8 + 3 is

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Q. A full adder adds

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Q. For a Mod 64 parallel counter we need

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Q. If the inputs to a 2 input XOR gate are high then, the output is high.

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Q. The number of select lines in a 16 : 1 multiplexer are

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Q. 9's complement of 56₁₀ is

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Q. Which of the following characteristic are necessary for a sequential circuit?

1. It must have 6 gates
2. It must have feedback
3. Its output should depend on past value

Which of the above statements are correct?

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Q. 1011₂ x 101₂ = __________ ₁₀

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Q. A combination circuit is one in which the output depends on

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Q. 71₈ = __________ .

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Q. A parallel in-parallel out shift register can be used to introduce delay in digital circuits.

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Q. Binary multiplication can be done by repeated addition.

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Q. Assertion (A): In totem pole output the output impedance is low.

Reason (R): TTL gate with active pull up should not be used in wired AND connection.

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