Electronics Engineering

# What is a asynchronous decade counters?

###### Wiki User

###### January 05, 2014 2:46PM

draw the circut diagram of the MOD60 asynchronous binary counter

## Related Questions

###### Asked in Computer Terminology, Electronics Engineering, The Difference Between

### Difference between synchronous and asynchronous counters?

Synchronous counters are the ones in which each flip flop is
driven by the same clock. whereas in asynchronous counters, each
flip flop is driven by different clock. output of the preceding
flip flop is used as as a clock for the next flip flop. Synchronous
counters can do any sort of counting like even count, odd count, to
skip a number etc, but asynchronous counters can do only up or down
counting. This is the reason why the design of asynchronous
counters is simpler than that of synchronous counters.

###### Asked in The Difference Between

### What are differences between asynchronous counter and synchronous counter?

Synchronous
Counters
Synchronous 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 Pulse
Synchronous 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
Counters
Asynchronous 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.
Considerations
Typically, 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.

###### Asked in Electronics Engineering

### What is does the term asynchronous mean in relation to counter?

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.

###### Asked in Math and Arithmetic, The Difference Between

### How many blue counters must be added so that the ratio of yellow counters to total counters is 1 to 6?

Let the number of Yellow counters you already have is Y
Let the number of non-yellow counters you already have is Z
Then the current ratio of Yellow counters to the total counters
is Y : Y + Z
Let the number of Blue counters you add be B
After they have been added, the ratio of Yellow counters to the
total counters is Y : Y + Z + B
This is 1 : 6
Thus Y = 1
and Y + Z + B = 6
→ Z + B = 5
Which means that for the Yellow counters you have you will have
five times as many counters made up of whatever non-Yellow counters
you originally had plus the Blue counters you added.
Thus to find out how many Blue counters to add, take the number
of Yellow counters, multiply it by 5 and subtract the number of non
yellow counters you originally had.
examples:
You had 6 Yellow counters
Add 6 × 5 - 0 = 30 Blue counters
Which gives you 6 Yellow and 30 Blue counters
→ ratio Yellow : total counters = 6 : 30 + 6 = 6 : 36 = 1 :
6
You had 4 Yellow counters and 6 Red counters
Add 4 × 5 - 6 = 14 Blue counters
Which gives you 4 Yellow counters, 6 Red counters and 14 Blue
counters
→ ratio Yellow : total counters = 4 : 6 + 14 + 4 = 4 : 24 = 1 :
6
You had 4 Yellow Counters, 2 Blue counters and 3 Red
counters
Add 4 × 5 - (2 + 3) = 15 Blue counters
Which gives you 4 Yellow counters, 3 Red counters and 2 + 15 =
17 Blue counters
→ ratio Yellow : total counters = 4 : 3 + 17 + 4 = 4 : 24 = 1 :
6

###### Asked in Math and Arithmetic, Algebra, Geometry

### How many counters are needed to make a square array with 5 counters on one side?

If you're making an outline of a square, then 16 counters. You
have the 4 corner counters, each shared by 2 sides and then in
between the corner counters there are 3 counters on each of the 4
sides (4*3 = 12).
If you're filling the inside of the square with counters, then
you have 5 rows of 5 = 25 counters.

###### Asked in Yu-Gi-Oh

### What are spell counters in Yu Gi Oh?

Spell counters are as treated like all counters: Counters.
Though for an answer this short, it is difficult to really
understand truly of counters.
let us begin with a very interesting creature I like it call:
The Venoms and Aliens.
Aliens and Venoms each have their own unique forms of
"counters."
Aliens place alien counters while Venoms place Venom
counters.
So what are these counters and what do they do?
First let us wipe away the spell, venom, alien, cloudian, all
that confusing stuff and just go with "Counters."
"Counters" are actually what ever it is that you can find to
place on your card such as coins, dice, tape, little skittles,
anything that can be used to know that it is a counter. I prefer to
use dice, for you can set the dice to how many counters is on your
current card.
Basically it's like a number of some thing being put on your
monster that will either accumulate or decrease. When a monster is
removed from the field or flipped face down, the counters are
removed.
That being noted: The second thing to understand is that
"Counters" are used for certain abilities depending on the counter
it self.
Venom counters tend to deduct attack points and kill off a
creature. Remember though: Tend. But how do venoms work like
that?
Same as Spells and Alien counters.... Card effects on the field
allow the counters to have a certain ability depending on the
counters it self.
Spell casters that uses Spell counters can remove these spell
counters and usually only spell counters to preform certain effects
or gain certain attack powers.
Venom monsters abilities can use these counters to deduct attack
points or even use spell cards that unleash a devastating effect
that could destroy a monster when their attack hits 0 due to these
counters.
These counters how ever are for now render useless and are
mainly just numbers or "things" being put on to cards that in time
build up. The only time that counters are at use is when card
effects on the fields like spell, traps, and monster effects are
using these counters. That is when counters become devastating.
In short, Spell counters are just like any counter but remain
the most important golden rule of counters: Spell counters are not
venom counters.
Counters are counters, spell counters are spell counters, venom
counters are venom counters, alien counters are alien counters and
so on and so fourth. That being noted, I hope this helps you now
understand, What are counters and spell counters.