What is race around condition in J-K flip-flop?

Race Around Condition in JK Flip-flop

For J-K flip-flop, if J=K=1, and if clk=1 for a long period of time, then output Q will toggle as long as CLK remains high which makes the output unstable or uncertain. This is called a race around condition in J-K flip-flop.

Which is the inactive condition of J-K flip-flop? A J-K flip-flop has a condition of J = 0, K=0, and both PRESET and LEAR are inactive.

What is the difference between race condition and toggle condition? Race around condition happens when output triggers a change in output. A change in output may change the output again and again before it settles….. making the output indeterminate and toggle in the same clock pulse. Toggling is when a particular input give different outputs different times.

In respect to this What is race around condition how it is resolved?

Detailed Solution

For JK flip-flop if J, K, and Clock are equal to 1 the state of flip-flop keeps on toggling which leads to uncertainty in determining the output of the flip-flop. This problem is called Race around the condition. This can be eliminated by using the following methods. Increasing the delay of flip-flop.

How do you avoid race around condition in a J-K flip-flop?

Steps to avoid racing condition in JK Flip flop:

1. If the Clock On or High time is less than the propagation delay of the flip flop then racing can be avoided. This is done by using edge triggering rather than level triggering.
2. If the flip flop is made to toggle over one clock period then racing can be avoided.

What is race around condition in J-K flip-flop and how it is avoided? JK Flip Flop:

For a given clock pulse, the output will oscillate between ‘0’ & ‘1’ when both J & K are high. The condition is referred to as “race around”. The race around can be avoided if the width of the clock pulse is less than the propagation delay.

Which of the following condition is true for J-K flip-flop? Explanation: In JK Flip Flop if J = K = 0 then it holds its current state. There will be no change. Explanation: If one wants to design a binary counter, the preferred type of flip-flop is J-K type because it has capability to recover from toggle condition.

How J-K flip-flop have solve invalid condition? The JK Flip Flop is basically a gated RS flip flop with the addition of the clock input circuitry. When both the inputs S and R are equal to logic “1”, the invalid condition takes place. Thus, to prevent this invalid condition, a clock circuit is introduced.

What is race around condition of JK flip flop and why is it different from toggling?

Race Around Condition In JK Flip-flop – For J-K flip-flop, if J=K=1, and if clk=1 for a long period of time, then Q output will toggle as long as CLK is high, which makes the output of the flip-flop unstable or uncertain. This problem is called race around condition in J-K flip-flop.

What is toggle state in JK flip flop? The J-K flip-flop has a toggle mode of operation when both J and K inputs are high. Toggle means that the Q output will change states on each active clock edge. … When the clock goes low, the slave takes on the state of the master and the master is latched.

What is latch What is the difference between latch and flip-flop?

The major difference between flip-flop and latch is that the flip-flop is an edge-triggered type of memory circuit while the latch is a level-triggered type. … On the other hand, the latch only changes its state whenever the control signal goes from low to high and high to low.

Which flip-flop is free from race condition? Explanation: T flip-flop is free from the race around condition because its output depends only on the input; hence there is no any problem creates as like toggle.

Why J-K flip-flop is preferred over SR flip-flop?

What is the major advantage of the J-K flip-flop over the S-R flip-flop? The J-K flip-flop is much faster. The J-K flip-flop does not have propagation delay problems. The J-K flip-flop has a toggle state.

What is the difference between a latch and a flip-flop?

Flip-flop is a bistable device i.e., it has two stable states that are represented as 0 and 1. Latch is also a bistable device whose states are also represented as 0 and 1. It checks the inputs but changes the output only at times defined by the clock signal or any other control signal.

What is race condition? A race condition is an undesirable situation that occurs when a device or system attempts to perform two or more operations at the same time, but because of the nature of the device or system, the operations must be done in the proper sequence to be done correctly.

Which of the following condition is true for JK flip flop? Explanation: In JK Flip Flop if J = K = 0 then it holds its current state. There will be no change. Explanation: If one wants to design a binary counter, the preferred type of flip-flop is J-K type because it has capability to recover from toggle condition.

What is race condition in SV?

A race condition in SystemVerilog is an simulation modeling artifact where the order of execution between two different constructs cannot be guaranteed.

What is race around condition how it is removed? Race around condition can be eliminated using the master-slave flip-flop. Master-Slave flip-flop is the cascaded combination of two flip-flops among which the first is designated as master flip-flop while the next is called slave flip-flop.

What is meant by race around condition?

When the S and R inputs of an SR flip flop is at logical 1 and then the input is changed to any other condition, then the output becomes unpredictable and this is called the race around condition. If the clock on or high time is less than the propagation delay of the flip flop then racing can be avoided.

What is ambiguous condition in a NAND based SR latch? Explanation: In a NAND based S-R latch, If S’=0 & R’=0 then both the outputs (i.e. Q & Q’) goes HIGH and this condition is called an ambiguous/forbidden state. This state is also known as an Invalid state as the system goes into an unexpected situation.

Which of the following condition is true for J-K flip-flop Mcq?

1. When the preset input is activated, the flip-flop will be set (Q=1, not-Q=0) regardless of any of the synchronous inputs or the clock. 2. When the clear input is activated, the flip-flop will be reset (Q=0, not-Q=1), regardless of any of the synchronous inputs or the clock.

What are the applications of J-K flip-flop? Applications of JK Flip Flop

• Registers. A single flip flop can store a 1 bit word. …
• Counters. Counter is a digital circuit used for a counting pulses or number of events and it is the widest application of flip-flops . …
• Event Detectors. …
• Data Synchronizers. …
• Frequency Divider.

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