GATE ECE 1999 | GATE ECE Year Wise Previous Years Questions

GATE ECE 1999

MCQ (Single Correct Answer)

-0.6

For a binary half-sub-tractor having two inputs A and B, the correct set of logical expressions for the outputs D (=A minus B) and X (=borrow) are

$$D = \,AB + \overline A \,B,\,X = \overline A \,B$$

$$D = \,\overline A \,B + A\overline B + A\overline B ,\,X = A\overline B $$

$$D = \,\overline A \,B + A\overline B ,\,X = \overline A \,B$$

$$D = \,AB + \overline A \,\overline B ,\,X = A\overline B $$

GATE ECE 1999

MCQ (Single Correct Answer)

-0.6

The ripple counter shown in the figure works as a GATE ECE 1999 Digital Circuits - Sequential Circuits Question 43 English

mod – 3 up counter

mod – 5 up counter

mod – 3 down counter

mod – 5 down counter

GATE ECE 1999

MCQ (Single Correct Answer)

-0.3

Commercially available ECL gates use two ground lines and one negative supply in order to

reduce power dissipation

increase fan-out

reduce loading effect

eliminate the effect of power line glitches or the biasing circuit.

GATE ECE 1999

MCQ (Single Correct Answer)

-0.3

A Darlington Emitter follower circuit is sometimes used in the output stage of a TTL gate in order to

increase its $${I_{OL}}$$

Reduce its $${I_{OH}}$$

Increase its speed of operation.

Reduce power Dissipation.

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