Digital Logic Design

The output of an exclusive-NOR gate is 1,Which input combination is correct?

• A = 1 B = 0

• A = 0 B = 1

• A = 0 B = 0

• none of the above

How many AND gates are required to implement the Boolean expression?

• 1

• 2

• 3

• 4

In an SR latch built from NOR gates which condition is not allowed?

• S=0, R=0

• S=0, R=1

• S=1, R=0

• S=1, R=1

In the toggle mode a JK flip-flop has

• J = 0, K = 0

• J = 1, K = 1

• J = 1, K = 1

• J = 1, K = 0

If J = K (J and K are shorted) in a JK flip-flop, what circuit is made

• SR Flip Flop

• D Flip Flop

• T Flip Flop

• M S J K Flip Flop

How many clock pulses will be required to completely load serially a 5-bit shift register?

• 1

• 5

• 7

• 6

On a master-slave flip-flop, when is the master enabled?

• when the gate is LOW

• when the gate is HIGH

• both of the above

• neither of the above

A J-K flip-flop is in a "no change" condition when ________

• J = 1, K = 1

• J = 1, K = 0

• J = 0, K = 1

• J = 0, K = 0

Which segments of 7-segment display would required to active to display the decimal digit 2?

• a, b, d, e, and g

• a, b, c, d, and g

• a, c, d, f, and g

• a, b, c, d, e, and f

How many flip-flops are required to construct a decade counter?

• 10

• 8

• 5

• 4