Q. 74HCT00 series is

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Q. The output of a full adder is

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Q. Number of cards read per minute by a card reader may be of the order of

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Q. Which of the following is equivalent to AND-OR realization?

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Q. How many different BCD number can be stored in a register containing 12 switches using an 8, 4, 2, 1 code?

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Q. An SR flip flop can be built using

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Q. Which one of the following is correct?

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Q. Assertion (A): The TTL output acts as a current sink in low state

Reason (R): The TTL input current is largest in low state.

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Q. The number of LED display indicators in logic probe are

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Q. The time needed by a TTL circuit to switch from 0 to 1 or 1 to 0 is about

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Q. Assertion (A): R-2R ladder type DAC has higher speed of operation than weighted resistor DAC

Reason (R): R-2R ladder type DAC uses only two different values of resistor network uses many different values of resistors

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Q. Which of the following circuits can be used as parallel-to-series converter?

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Q. A digital clock uses __________ chip

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Q. Which of the following conversion is incorrect?

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Q. In a flip-flop with RS latch a high S and a low R set the output to __________ and a low S and a high R set the output __________ .

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Q. TTL XOR gate is very suitable as LCO driver.

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Q. A typical microcomputer has 65, 536 registers in its memory. It will be specified as

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Q. A function table is required in very large numbers the memory most switched for this purpose would be

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Q. What kind of signal does the times produce?

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Q. Assertion (A): A presettable counter can be preset to any desired starting point

Reason (R): The maximum frequency of a ripple counter depends on the modulus.

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