## What do you mean by mod asynchronous counter?

Asynchronous counters are those whose output is free from the clock signal. Because the flip flops in asynchronous counters are supplied with different clock signals, there may be delay in producing output. The number of output states of counter is called “Modulus” or “MOD” of the counter.

## What is a modulo n 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 do you create a mod-n asynchronous counter?**

A general mod-N counter can be produced by using flip-flops with clear inputs and then simply decoding the Nth count state and using this to reset all flip-flops to zero. The count will therefore be from 0 to (TV-1) repeated since the circuit resets when the count gets to N.

**How many types of asynchronous counter are there?**

Counters are of two types depending upon clock pulse applied. These counters are: Asynchronous counter, and Synchronous counter. In Asynchronous Counter is also known as Ripple Counter, different flip flops are triggered with different clock, not simultaneously.

### What is counter and its types?

Counter is a sequential circuit. A digital circuit which is used for a counting pulses is known counter. Counter is the widest application of flip-flops. Counters are of two types. Asynchronous or ripple counters.

### What are the applications of counters?

Applications of counters

- Frequency counters.
- Digital clocks.
- Analog to digital convertors.
- With some changes in their design, counters can be used as frequency divider circuits.
- In time measurement.
- We can design digital triangular wave generator by using counters.

**What is the difference between up and down counters?**

An up-counter counts events in increasing order. A down-counter counts stuff in the decreasing order. An up-down counter is a combination of an up-counter and a down-counter. It can count in both directions, increasing as well as decreasing.

**Which counter has least delay?**

Explanation: Synchronous counter doesn’t have propagation delay.

## 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.