Introduction to Sequential Circuits | Digital Electronics

In this video, the basics of the Sequential Circuit have been explained.

By watching this video, you will learn the following topics.

0:00 What is Sequential Circuit?
3:33 Block Diagram of Sequential Circuit
5:43 Asynchronous Sequential Circuit
6:42 Synchronous Sequential Circuit
7:33 What is a clock signal? The basic terminologies related to the clock signal
9:55 Edge Triggered and Level Triggered Sequential Circuits

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What is Sequential Circuit?

The Sequential Circuit is a type of digital circuit where the output of the circuit depends on the current inputs, as well as the past sequence of inputs.
And since the output depends on the past inputs, this Sequential Circuit also has a memory element.
In this video, the block diagram of the Sequential Circuit has been explained using the example.

Types of Sequential Circuits:

There are two types of Sequential Circuits
1) Synchronous Sequential Circuits
2) Asynchronous Sequential Circuits

Asynchronous Sequential Circuits:
The Asynchronous Sequential Circuits respond to the change in the input immediately.
In these circuits, the memory element within the circuit responds to the change in the input immediately.

Synchronous Sequential Circuits:
In these circuits, the memory element within the circuit responds to change in the input only at the discrete-time intervals. The output state of the memory element changes as per the clock signal.

The Synchronous Sequential Circuits can be further classified into two types:
1) Edge Triggered
2) Level Triggered

Level Triggered Sequential Circuits:
In these circuits, the memory element within the circuit responds to the input, when the clock level goes high. (or low). These circuits are sensitive to the clock level.

Edge Triggered Sequential Circuits:
In these circuits, the memory element within the circuit responds to the input during the clock transition. (At the rising or the falling edge of the clock signal)

In this video, the basics of the Sequential Circuit and its different aspects are explained in detail.

This video will be helpful to all the students of science and engineering in understanding the basics of the Sequential Circuits.

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