All Courses
Explore Courses UPSC Exam UPSC Test Series Free Notes EduRev Infinity Get the App Login Join for Free
Sign in Open App
Electrical Engineering (EE) Exam  >  Electrical Engineering (EE) Questions  >  Four J-K flip-flops are cascaded with their J... Start Learning for Free
SaveJoin the Discussion on the App
Four J-K flip-flops are cascaded with their J-K inputs tied HIGH. If the input frequency (fin) to the first flip-flop is 32 kHz, the output frequency (fout) is ________
  • a)
    1 kHz
  • b)
    2 kHz
  • c)
    4 kHz
  • d)
    16 kHz
Correct answer is option 'B'. Can you explain this answer?
FREE This question is part of
Download PDF Attempt Test
Download PDF Attempt this Test
Most Upvoted Answer
Four J-K flip-flops are cascaded with their J-K inputs tied HIGH. If t...
32/2 = 16:-first flip-flop,
16/2 = 8:- second flip-flop,
8/2 = 4:- third flip-flop,
4/2 = 2:- fourth flip-flop.
Since the output frequency is determined on basis of the 4th flip-flop.
Free Test
FREE
Start Free Test
Start Free Test
Community Answer
Four J-K flip-flops are cascaded with their J-K inputs tied HIGH. If t...
Explanation:

To solve this problem, we need to understand the operation of J-K flip-flops and how they are cascaded together.

J-K Flip-flop:
A J-K flip-flop is a sequential logic device with two inputs: J (set) and K (reset) and two outputs: Q (output) and Q' (complement of the output). The flip-flop has two stable states: '0' and '1'. The output changes based on the inputs and the current state.

When J = 0 and K = 0, the output remains unchanged.
When J = 0 and K = 1, the output is reset to '0'.
When J = 1 and K = 0, the output is set to '1'.
When J = 1 and K = 1, the output toggles between '0' and '1'.

Cascading Flip-flops:
When flip-flops are cascaded together, the output of one flip-flop is connected to the input of the next flip-flop. This allows for the creation of longer shift registers or counters.

In this problem, four J-K flip-flops are cascaded together, with their J-K inputs tied HIGH. This means that the J and K inputs of all the flip-flops are permanently set to '1'.

Input Frequency:
The input frequency (fin) to the first flip-flop is given as 32 kHz.

Output Frequency:
Since the J and K inputs of all the flip-flops are permanently set to '1', the flip-flops will toggle their outputs at half the frequency of the input signal.

Therefore, the output frequency (fout) will be half of the input frequency (fin).

Calculating the output frequency:
fout = fin / 2 = 32 kHz / 2 = 16 kHz.

Therefore, the output frequency (fout) is 16 kHz.

The correct answer is option 'D'
< Previous Question Next Question >
Explore Courses for Electrical Engineering (EE) exam

Similar Electrical Engineering (EE) Doubts

Comprehension:Read the following paragraph and answer the questions.A digital counter is a set of flipflops whose states change in response to the pulses applied at Input. Counters can be asynchronous counters or synchronous counters. A counter is an example of a state machine; the number of states is called the modulus. Two basic types of state machines are the Moore and the Mealy. In Moore machine, the combinational logic is a gate array with outputs that determine the next state of the flip-flops in the memory. For Mealy machine, the present state affects just as in Moore machine but in addition, the inputs also affect the outputs.In a 4-bit asynchronous binary counter, each D flip-flop is negative edge-triggered and has a propagation delay for 10 nanoseconds. What is the highest frequency allowed for the counter to avoid problems due to propagation delay?

Top Courses for Electrical Engineering (EE)View all

Top Courses for Electrical Engineering (EE)

Four J-K flip-flops are cascaded with their J-K inputs tied HIGH. If the input frequency (fin) to the first flip-flop is 32 kHz, the output frequency (fout) is ________a)1 kHzb)2 kHzc)4 kHzd)16 kHzCorrect answer is option 'B'. Can you explain this answer?
Question Description
Four J-K flip-flops are cascaded with their J-K inputs tied HIGH. If the input frequency (fin) to the first flip-flop is 32 kHz, the output frequency (fout) is ________a)1 kHzb)2 kHzc)4 kHzd)16 kHzCorrect answer is option 'B'. Can you explain this answer? for Electrical Engineering (EE) 2024 is part of Electrical Engineering (EE) preparation. The Question and answers have been prepared according to the Electrical Engineering (EE) exam syllabus. Information about Four J-K flip-flops are cascaded with their J-K inputs tied HIGH. If the input frequency (fin) to the first flip-flop is 32 kHz, the output frequency (fout) is ________a)1 kHzb)2 kHzc)4 kHzd)16 kHzCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Electrical Engineering (EE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Four J-K flip-flops are cascaded with their J-K inputs tied HIGH. If the input frequency (fin) to the first flip-flop is 32 kHz, the output frequency (fout) is ________a)1 kHzb)2 kHzc)4 kHzd)16 kHzCorrect answer is option 'B'. Can you explain this answer?.
Solutions for Four J-K flip-flops are cascaded with their J-K inputs tied HIGH. If the input frequency (fin) to the first flip-flop is 32 kHz, the output frequency (fout) is ________a)1 kHzb)2 kHzc)4 kHzd)16 kHzCorrect answer is option 'B'. Can you explain this answer? in English & in Hindi are available as part of our courses for Electrical Engineering (EE). Download more important topics, notes, lectures and mock test series for Electrical Engineering (EE) Exam by signing up for free.
Here you can find the meaning of Four J-K flip-flops are cascaded with their J-K inputs tied HIGH. If the input frequency (fin) to the first flip-flop is 32 kHz, the output frequency (fout) is ________a)1 kHzb)2 kHzc)4 kHzd)16 kHzCorrect answer is option 'B'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of Four J-K flip-flops are cascaded with their J-K inputs tied HIGH. If the input frequency (fin) to the first flip-flop is 32 kHz, the output frequency (fout) is ________a)1 kHzb)2 kHzc)4 kHzd)16 kHzCorrect answer is option 'B'. Can you explain this answer?, a detailed solution for Four J-K flip-flops are cascaded with their J-K inputs tied HIGH. If the input frequency (fin) to the first flip-flop is 32 kHz, the output frequency (fout) is ________a)1 kHzb)2 kHzc)4 kHzd)16 kHzCorrect answer is option 'B'. Can you explain this answer? has been provided alongside types of Four J-K flip-flops are cascaded with their J-K inputs tied HIGH. If the input frequency (fin) to the first flip-flop is 32 kHz, the output frequency (fout) is ________a)1 kHzb)2 kHzc)4 kHzd)16 kHzCorrect answer is option 'B'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice Four J-K flip-flops are cascaded with their J-K inputs tied HIGH. If the input frequency (fin) to the first flip-flop is 32 kHz, the output frequency (fout) is ________a)1 kHzb)2 kHzc)4 kHzd)16 kHzCorrect answer is option 'B'. Can you explain this answer? tests, examples and also practice Electrical Engineering (EE) tests.
Explore Courses for Electrical Engineering (EE) exam

Top Courses for Electrical Engineering (EE)

Explore Courses

Suggested Free Tests

Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
10M+ students study on EduRev
Get App
© EduRev
Education Revolution
Signup to see your scores go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup