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Designing of a mod 6 counter containing several steps .
1st step is tabulating the present state - next state table
In up counter from 000 to 111.
so the we write excitation table for JK flip flop.
Then we find equations for each J & K using K- map.
so the first step is P-S table
Q2 Q1 Q0 Q2 Q1 Q0 J2
Wiki User
∙ 11y ago
Wiki User
∙ 12y agoplz ans dis quest by doing the ckt
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How do you design the 3 bit binary counter using D flip flop?
Designing a 3 bit synchronous counter using jk flip flop is not an easy project for the uninformed. This is best left to professionals who are adept at programming. There are lengthy guides available on the internet if it is necessary to create one.
Explain the Working of 3 bit synchronous counter?
It can be seen that the external clock pulses (pulses to be counted) are fed directly to each J-K flip-flop in the counter chain and that both the J and K inputs are all tied together in toggle mode, but only in the first flip-flop, flip-flop A (LSB) are they connected HIGH, logic "1" allowing the flip-flop to toggle on every clock pulse. Then the synchronous counter follows a predetermined sequence of states in response to the common clock signal, advancing one state for each pulse. The J and K inputs of flip-flop B are connected to the output "Q" of flip-flop A, but the J and K inputs of flip-flops C and D are driven from AND gates which are also supplied with signals from the input and output of the previous stage. If we enable each J-K flip-flop to toggle based on whether or not all preceding flip-flop outputs (Q) are "HIGH" we can obtain the same counting sequence as with the asynchronous circuit but without the ripple effect, since each flip-flop in this circuit will be clocked at exactly the same time. As there is no propagation delay in synchronous counters because all the counter stages are triggered in parallel the maximum operating frequency of this type of counter is much higher than that of a similar asynchronous counter. Type your answer here...
What is a 2 bit counter?
a 2 bit counter is a counter which have only 2 bits i.e. the posibble counting states are 00, 01, 10,11,00. It may also be known as MOD 3 counter. It can be realized by using 2 Flip flop.
How a ripple counter works?
Clock is propagated from one T or JK flip flop to another hence it works. A ripple counter works by the following principle. A clock pulse is applied to the first flip flop and the output of the first flip flop acts as the clock input to the second flip flop and the sequence continues in that order.
No of flip flop in 5 bit ripple counter?
There are five flip-flops in a five-bit ripple counter.
What is the advantage and disadvantage of a synchronous counter over an asynchronous counter?
1. Easier to design 2. No propagation delay Actually the second one is the most important reason. In designing circuits that work at high clock rates, ripples will result in errors so synchronization is very very important.
How do you design the 3 bit binary counter using D flip flop?
Designing a 3 bit synchronous counter using jk flip flop is not an easy project for the uninformed. This is best left to professionals who are adept at programming. There are lengthy guides available on the internet if it is necessary to create one.
Explain the Working of 3 bit synchronous counter?
It can be seen that the external clock pulses (pulses to be counted) are fed directly to each J-K flip-flop in the counter chain and that both the J and K inputs are all tied together in toggle mode, but only in the first flip-flop, flip-flop A (LSB) are they connected HIGH, logic "1" allowing the flip-flop to toggle on every clock pulse. Then the synchronous counter follows a predetermined sequence of states in response to the common clock signal, advancing one state for each pulse. The J and K inputs of flip-flop B are connected to the output "Q" of flip-flop A, but the J and K inputs of flip-flops C and D are driven from AND gates which are also supplied with signals from the input and output of the previous stage. If we enable each J-K flip-flop to toggle based on whether or not all preceding flip-flop outputs (Q) are "HIGH" we can obtain the same counting sequence as with the asynchronous circuit but without the ripple effect, since each flip-flop in this circuit will be clocked at exactly the same time. As there is no propagation delay in synchronous counters because all the counter stages are triggered in parallel the maximum operating frequency of this type of counter is much higher than that of a similar asynchronous counter. Type your answer here...
What are synchronous input for j k flipflop?
JK flip flop are synchronous ONLY when the rise or the fall edge of the clock will transfer the data to the outputs
What are synchronous input for j-k flipflop?
JK flip flop are synchronous ONLY when the rise or the fall edge of the clock will transfer the data to the outputs
How does a plc counter work?
as flip flop
What is a 2 bit counter?
a 2 bit counter is a counter which have only 2 bits i.e. the posibble counting states are 00, 01, 10,11,00. It may also be known as MOD 3 counter. It can be realized by using 2 Flip flop.
What are differences between asynchronous counter and synchronous counter?
Synchronous CountersSynchronous counters typically consist of a memory element, which is implemented using flip-flops, and a combinational element, which is traditionally implemented using logic gates. Logic gates are logic circuits with one or more input terminals and one output terminal, in which the output is switched between two voltage levels determined by a combination of input signals. The use of logic gates for combinational logic typically reduces the cost of components for counter circuits to an absolute minimum, so it remains a popular approach.Clock PulseSynchronous counters have an internal clock, whereas asynchronous counters do not. As a result, all the flip-flops in a synchronous counter are driven simultaneously by a single, common clock pulse. In an asynchronous counter, the first flip-flop is driven by a pulse from an external clock and each successive flip-flop is driven by the output of the preceding flip-flop in the sequence. This is the essential difference between synchronous and asynchronous counters.Asynchronous CountersAsynchronous counters, also known as ripple counters, are the simpler type, requiring fewer components and less circuitry than synchronous counters. Asynchronous counters are easier to construct than their synchronous counterparts, but the absence of an internal clock also introduces several major disadvantages. The flip-flops in an asynchronous counter change states at different times, so the delays in changing from one state to another -- known as propagation delays -- add up to create an overall delay. The more flip-flops an asynchronous counter contains, the greater the overall delay.ConsiderationsTypically, asynchronous counters are less useful than synchronous counters in complex, high-frequency systems. Some integrated circuits react faster than others, so if an external event occurs close to a transition between states -- when some, but not all, the integrated circuits have changed state -- it may introduce errors into the counter. Such errors are difficult to predict because of the randomly variable time difference between events. Furthermore, propagation delays can make it difficult to detect, or decode, the output state of an asynchronous counter circuit electronically.
How many flip flop required in a decade counter?
4
What is the maximum counting speed of a 4 bit binary counter which is composed of a flip flop with a propagation delay of 25nano seconds?
Assuming you are running in synchronous mode, a counter with a propagation time of 25 ns can run up to 40 MHz. Since there are other gates involved, I would consider a margin of safety to be 20 MHz.
What is the modulus of a four flip flop ring counter?
either 4 or 8 depending on the type of counter
How a ripple counter works?
Clock is propagated from one T or JK flip flop to another hence it works. A ripple counter works by the following principle. A clock pulse is applied to the first flip flop and the output of the first flip flop acts as the clock input to the second flip flop and the sequence continues in that order.
