IndiaBIX

Digital Electronics - Counters

Exercise : Counters - General Questions
66.
What is the maximum delay that can occur if four flip-flops are connected as a ripple counter and each flip-flop has propagation delays of tPHL = 22 ns and tPLH = 15 ns?
15 ns
22 ns
60 ns
88 ns
Answer: Option
Explanation:
No answer description is available. Let's discuss.
67.
Which of the following statements are true?
Asynchronous events do not occur at the same time.
Asynchronous events are controlled by a clock.
Synchronous events do not need a clock to control them.
Only asynchronous events need a control clock.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
68.
Which segments (by letter) of a seven-segment display need to be active in order to display a digit 6?
b, c, d, e, f, and g
a, c, d, e, f, and g
a, b, c, d, and f
b, c, d, e, and f
Answer: Option
Explanation:
No answer description is available. Let's discuss.
69.
Which of the following groups of logic devices would be the minimum required for a MOD-64 synchronous counter?
Five flip-flops, three AND gates
Seven flip-flops, five AND gates
Four flip-flops, ten AND gates
Six flip-flops, four AND gates
Answer: Option
Explanation:
No answer description is available. Let's discuss.
70.

The circuit given below fails to produce data output. The individual flip-flops are checked with a logic probe and pulser, and each checks OK. What could be causing the problem?

The data output line may be grounded.
One of the clock input lines may be open.
One of the interconnect lines between two stages may have a solder bridge to ground.
One of the flip-flops may have a solder bridge between its input and Vcc.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers