1
|
Describe the function of the counter.
|
|
Function of the
counter
- The function
of the counter is to count pulses.
- It consists of
set of flip flops whose state changes according to input to the counter.
|
2
|
How the
counter is classified?
|
|
The counter may be
|
3
|
Which is
the simplest type of counter? Why?
|
|
Simplest counter
- The asynchronous counter is the simplest type of
counter because it is easy to design and requires least hardware for design
of it.
|
4
|
Give the
reason : The flip flops do not change the states at same time in the ripple
counter.
|
|
The flip flops do not change the states at the same
time in the ripple counter because all the flip flops are not triggered
simultaneously.
|
5
|
Describe
the disadvantage of the asynchronous counter. Which counter is used to
overcome this disadvantage?
|
|
Disadvantage of Asynchronous counter
- There is unwanted spike generated in the
asynchronous counter. This disadvantage is carried out by using parallel
counter.
|
6
|
Why the
asynchronous counter is also called as ripple counter?
|
|
Ripple counter
- The transition from first stage ripple through the
last to the last stage is done via various inter – mediates stages.
|
7
|
Why the
asynchronous counter is called as serial counters?
|
|
Serial counter
- All the flip flops do not change state
simultaneously in the asynchronous counter therefore it is called as serial
counter.
|
8
|
Why the
synchronous counter is called as Parallel counter?
|
|
Parallel counter
- All the flip flops change its state simultaneously
in the synchronous counter therefore it is called as parallel counter.
|
9
|
Which
counter is also known as series counter?
|
|
Ripple counter
|
10
|
Why the
synchronous counter is faster than the asynchronous counter?
|
|
The synchronous counter is faster than the
asynchronous counter because of the synchronous counter has less propagation
delay than that of asynchronous counter.
|
11
|
Explain
the term : UP counter and DOWN counter
|
|
UP counter
- It is a counter which
counts in the upward direction i.e. 1, 2, 3……N.
DOWN counter
- It is a
counter which counts in the downward direction i.e. n, n – 1, n – 2 …..1, 0.
|
12
|
Explain
the term : State of the counter, Modulus of the counter, Full modulus counter
|
|
State of the counter
- Each count of the
counter is called as the state of the counter.
Modulus of the counter
- It is defined
as the number of states through the counter passes before it comes to its
starting state.
- The 3 bit
counter has 8 states and it is called as divide by 8 counter.
Full modulus counter
- It is defined
as the counter which goes all the possible states before restarting.
|
13
|
Explain
the term : Variable modulus counter, Terminal counter, Divide by N counter
|
|
Variable modulus counter
- It is a counter in
which the maximum number of states changed.
Terminal counter
- It is defined as the
final state of the counter.
Divide by N counter
- The mode N counter
divides the input frequency by N therefore it is called as divide by N
counter. i.e. mode 4 counter divides the input frequency by 4
|
14
|
What do
you mean by mod – 16 counters?
|
|
Mod – 16 counter
- It is a 4 bit
counter which has 16 states.
|
15
|
What is
meaning of the counter is shortened modulus?
|
|
Shortened modulus
- It is a counter which
does not utilize all its states. The some of the states are invalid or unutilized.
|
No comments:
Post a comment