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Counter circuits made from cascaded J-K flip-flops where each clock input receives its pulses from the output of the previous flip-flop invariably exhibit a ripple effect, where false output counts are generated between some steps of the count sequence. These types of counter circuits are called asynchronous counters, or ripple counters.
Wiki User
∙ 11y ago
Wiki User
∙ 13y agoA: Asynchronous counter means that the output can change without any relationship to the inputs. synchronous means that the output will only change in sync withe input like a rising clock or a falling clock transition,
Wiki User
∙ 10y agoThey have propagation delay as compared to synchronous counters which do not.
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How many flip-flops are needed in an up-asynchronous counter which can count up to 64?
6
What are the advantages and disadvantages of asynchronous transfer mode?
Go to this site http://homepages.uel.ac.uk/u0124452/MyPage/Advantages%20and%20Disadvantages%20of%20ATM.htm
Why is a synchronous counter referred to ripple counter?
A synchronous counter is not referred to as a ripple counter. They are two different things. The ripple counter uses the output of each stage to trigger the input of the next stage, resulting in propagation delay between stages. The synchronous counter, on the other hand clocks all stages on the same clock edge, making them all change at relatively the same time.
Are Electronic communication always asynchronous communications true or false?
Electronic communication is always asynchronous communication
What is an asynchronous linear-induction weapons?
along the lines of a railgun or coilgun
Brief explanation of asynchronous ripple counter?
brief explanation of asynchronous ripple counter
What is a asynchronous counters?
draw the circut diagram of the MOD60 asynchronous binary counter
What is a asynchronous decade counters?
draw the circut diagram of the MOD60 asynchronous binary counter
What are disadvantages of dram?
DRAM is a asynchronous,it does not synchronized with system bus
How many D flip-flop is needed to build a Mod 16 asynchronous counter?
4
How many flip-flop are needed in an up-asynchronous counter which can count up to 64?
6
How many flip-flops are needed in an up-asynchronous counter which can count up to 64?
6
What are the various Control measures to counter disadvantages of using a computer system?
What are the various Control measures to counter disadvantages of using a computer system?" What are the various Control measures to counter disadvantages of using a computer system?"
Draw a 3 bit asynchronous counter circuit?
Fristly drow one line.then bottom of this line 4 types
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.
What is the conclusion of 4 bit asynchronous counter?
im asking ,,why u asking me again,,isnt this website for answering question how weird..
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.
