What does a modulo 6 asynchronous counter use?

Mod-6 Synchronous Counter using J-K Flip -Flops.

What is a counter design a mod 6 counter?

Johnson counters are one of the most important applications of shift registers. Since a mod 6 Johnson counter can count up to 6 states, 3 flip flops will be required. Like a ring counter, a Johnson counter is a synchronous counter, hence the clock needs to be in “ON” state for the state transitions can happen.

How do you design a mod counter?

Design Mod – N synchronous Counter

1. Introduction :
2. Design for Mod-N counter :
3. Step 1 : Decision for number of flip-flops –
4. Step 2 : Write excitation table of Flip flops –
5. Step 3 : Draw state diagram and circuit excitation table –
6. Circuit excitation table –

How do you find the modulo of a counter?

The modulus of a counter is given as: 2n where n = number of flip-flops. So a 3 flip-flop counter will have a maximum count of 23 = 8 counting states and would be called a MOD-8 counter. The maximum binary number that can be counted by the counter is 2n–1 giving a maximum count of (111)2 = 23–1 = 710.

What is mod of a counter?

The number of different output states a counter can produce is called the modulo or modulus of the counter. The Modulus (or MOD-number) of a counter is the total number of unique states it passes through in one complete counting cycle with a mod-n counter being described also as a divide-by-n counter.

How many flip-flops are required for Mod 16 Johnson counter?

sixteen flip-flops
A “mod-n” ring counter will require “n” number of flip-flops connected together to circulate a single data bit providing “n” different output states. For example, a mod-8 ring counter requires eight flip-flops and a mod-16 ring counter would require sixteen flip-flops.

What is asynchronous up down counter?

An asynchronous up-down counter includes a plurality of counter blocks. Each of the counter blocks has a counter output, an up-down control output, and an up-down control input. An up-down control signal output from each of the counter blocks has at least two bits.

Is mod counter synchronous or asynchronous?

Counters are sequential logic devices that are activated or triggered by an external timing pulse or clock signal. A counter can be constructed to operate as a synchronous circuit or as an asynchronous circuit. With synchronous counters, all the data bits change synchronously with the application of a clock signal.

How to design mod 6 asynchronous counter using K-Maps?

MOD 6 asynchronous counter will require 3 flip flops and will count from 000 to 101. Rest of the states are invalid. To design the combinational circuit of valid states, following truth table and K-map is drawn: From the above truth table, we draw the K-maps and get the expression for the MOD 6 asynchronous counter.

What is a synchronous mod 6 down counter?

To give you an example of a synchronous mod 6 down counter. This design also caters for the two unused states, 110 and 111. If either of these two states should occur, perhaps at power up, then the counter will be sent to state 000. Thanks for contributing an answer to Electrical Engineering Stack Exchange!

What is 3-bit asynchronous up/down counter?

Design of 3 bit Asynchronous up/down counter : It is used more than separate up or down counter. In this a mode control input (say M) is used for selecting up and down mode. A combinational circuit is required between each pair of flip-flop to decide whether to do up or do down counting.

What is modmodulo 16 asynchronous counter?

Modulo 16 asynchronous counter can be modified using additional logic gates and can be used in a way that the output will give a decade (divided by 10) counter output, which is useful in counting standard decimal numbers or in arithmetic circuits. This type of counters called as Decade Counters.