Table of Contents
- 1 What it is known as ripple counter?
- 2 What are counters and its types?
- 3 Where is the ripple counter used?
- 4 What is a counter digital logic?
- 5 How does a counter work?
- 6 What is mod 12 ripple counter?
- 7 What do you mean by counter?
- 8 What do you understand by counter?
- 9 Why do we need logic gates to design a ripple counter?
- 10 What is the n-mod ripple counter?
What it is known as ripple counter?
Asynchronous counters are sometimes called ripple counters because the data appears to “ripple” from the output of one flip-flop to the input of the next. They can be implemented using “divide-by-n” counter circuits.
What are counters and its types?
Counter is the widest application of flip-flops. It is a group of flip-flops with a clock signal applied. Counters are of two types. Asynchronous or ripple counters. Synchronous counters.
What is 4bit ripple counter?
In 4-bit ripple counter, n value is 4 so, 4 JK flip flops are used and the counter can count up to 16 pulses. Below the circuit diagram and timing diagram are given along with the truth table.
Where is the ripple counter used?
A counter is basically used to count the number of clock pulses applied to a flip-flop. It can also be used for Frequency divider, time measurement, frequency measurement, distance measurement and also for generating square waveforms.
What is a counter digital logic?
In digital logic and computing, a counter is a device which stores (and sometimes displays) the number of times a particular event or process has occurred, often in relationship to a clock. The most common type is a sequential digital logic circuit with an input line called the clock and multiple output lines.
What is the function of counter?
Counters are used in digital electronics for counting purpose, they can count specific event happening in the circuit. For example, in UP counter a counter increases count for every rising edge of clock.
How does a counter work?
Counter is a digital device and the output of the counter includes a predefined state based on the clock pulse applications. In synchronous counter, only one clock i/p is given to all flip-flops, whereas in asynchronous counter, the o/p of the flip flop is the clock signal from the nearby one.
What is mod 12 ripple counter?
It is obvious that a mod-12 counter will require 4 flip-flops which when connected as a counter, will provide 16 states. This counter counts 0, 1, 2, .., 15 and then it resets to 0. For a mod-12 counter, one may skip state 12 and return to state 0 from state 11 and the cycle should continue this way.
Why asynchronous counter is called ripple counter?
Asynchronous Counters. Only the first flip-flop is clocked by an external clock. Asynchronous counters are also called ripple-counters because of the way the clock pulse ripples it way through the flip-flops.
What do you mean by counter?
1 : a piece (as of metal or plastic) used in reckoning or in games. 2 : something of value in bargaining : asset. 3 : a level surface (such as a table, shelf or display case) over which transactions are conducted or food is served or on which goods are displayed or work is conducted jewelry counter a lunch counter.
What do you understand by counter?
What is ripple counter in a circuit?
It is known as ripple counter because of the way the clock pulse ripples its way through the flip-flops. Some of the features of ripple counter are: It is an asynchronous counter. Different flip-flops are used with a different clock pulse. All the flip-flops are used in toggle mode.
Why do we need logic gates to design a ripple counter?
Also, a few numbers of logic gates are needed to design asynchronous counters. So they are elementary in design and also are less expensive. A n-bit ripple counter can count up to 2 n states. It is also known as MOD n counter. It is known as ripple counter because of the way the clock pulse ripples its way through the flip-flops.
What is the n-mod ripple counter?
The n-MOD ripple counter can count 2n states, and then the counter resets to its initial value. Different types of flip flops with different clock pulse are used. It is an example of an asynchronous counter. The flip flops are used in toggle mode.
How do you implement a divide-by-4 ripple counter?
It can be implemented using D-type flip-flops or JK-type flip-flops. The circuit below uses 2 D flip-flops to implement a divide-by-4 ripple counter (2 n = 2 2 = 4). It counts down. Click on CLK (Red) switch and observe the changes in the outputs of the flip flops.