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Introduction to Digital Electronics

In this video, some of the basic aspects of Digital Electronics are covered.

Here is the list of different topics covered in the video:
0:00 Introduction
1:08 Analog Signal Vs Digital Signal
2:51 Advantage of Digital System over Analog System
6:14 Overview of Digital Circuits
9:11 Topics to be covered in upcoming videos

Introduction to Digital Electronics:
Digital electronics is the field of electronics that deals with digital signals.
It means the signal which is processed or generated using the electronic circuits is digital in nature. Smartphones, personal computer, and many communication equipments which we are using in our day to day life are the example of it.

Analog Signal vs. Digital Signal

An Analog signal is the type of signal whose amplitude can take any value in the given range. Most of the naturally occurring signals are analog in nature. For example, voice signal, temperature, pressure signal are examples of analog signals.

Digital signals are the ones whose amplitude can take only finite values in the given range.
Virtually all the modern digital circuits which we know are working on two voltage levels. High Voltage level (often referred as Logic High) and Low Voltage level (often referred as logic low).
Since the digital circuits are working with only two discrete voltage levels, the digital inputs and outputs can be represented using the binary number system

Advantages of Digital System over Analog System:

1. Digital Signal is immune to noise and interference
2. The digital data is easy to store, replicate, and process
3. Digital systems are more accurate and reliable than analog systems
4. Compared to an analog system, digital systems are easily scalable
5. Currently, the digital circuits are much easy to fabricate and it is also possible to fabricate them in larger density

Most of the naturally occurring signals are analog in nature. To process them in the digital domain,
first, it needs to be converted into a digital signal. Using analog to digital converter, it is possible to convert the analog signal into a digital signal. And if required then using Digital to Analog Converter (DAC) it is possible to convert the digital signal back into the analog signal.

Introduction to ADC and DAC:

ADC and DAC Playlist:
http://bit.ly/3lA6epX

Logic Gates: The basic building block of digital circuits

The logic gates are the basic building block of digital circuits. Using these logic gates various logic functions can be implemented. In general, digital circuits can be classified as either combinational circuits or sequential circuits.

In combinational circuits, the output of the circuit depends on the present input to the circuit, while in the sequential circuit, the output of the circuit depends on the present inputs as well as the past outputs. Using a sequential circuit it is possible to store the digital data. The flip-flop is a very basic sequential circuit that can store one bit of information. Combining various flip-flops, it is possible to design more complex sequential circuits.

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

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