Introduction to Digital Electronics
If you would like to learn all about digital electronics from 0 (basic) to 1 (expert level), then you are in the right place. In this tutorial of digital electronics, we will facilitate you to develop a basic understanding of digital electronics that is helpful to resolve every theoretical or numerical problem regardless of their difficulty level. Meanwhile, you will also learn to use these concepts in your live projects.
Overview of Digital System
Before the existence of digital systems, it had been very complex to make large calculations, data processing, data transfer, and power transmission to various small components in a circuit and many other scientific applications. Real-time updates and data processing are unachievable things, and these functions are the core of most of the operations in industry and space live projects. To beat all these challenges, we use digital systems. The foremost advantage of a digital system is that we can easily change the program (set of instructions) as per the required specific output.
In general, electronic systems are classified into two types, i.e., analog and digital.
Analog System:- Analog systems are those systems within which voltages and currents vary continuously and gradually throughout the given range. Within a specified range, they’ll take infinite values.
Digital System:- Those systems during which voltage levels assume a finite number of discrete values, are known as Digital System. Practically each voltage level is a narrow band of voltages. Digital circuits are also known as switching or logic circuits because every digital circuit obeys a particular set of logical rules to switch from one value to another. Their transition time is assumed to be zero. It can take many inputs and give the desired output based on the different internal and external conditions. Generally, the digital system takes values in the form of ‘1’ and ‘0’. Sometimes they are also called “True” and “False.”
Basic requirements for designing the digital electronic system are:-
1. Easy to design
2. Easy to store bulk information with greater accuracy and precision
3. These systems have Stable memories
4. These systems are Less affected by surrounding atmosphere such as noise etc.
5. We can Easily Reprogram digital systems.
6. Digital systems are of compact size
7. These systems consumes Less power dissipation or losses
8. Protection of data
9. Less power consumption
1. The human brain doesn’t understand digital data easily.
2. Data must be in digital or binary form, so the need for data conversion arises.
3. Need for analog to digital converter and vice-versa.
All modern major electronic devices are composed of the digital circuits. Some of the applications of digital system are listed below.
1. Digital voltmeters
2. Digital displays
3. Electronic Calculators
4. Data processing
5. Microwaves
6. Digital watches
7. Countdown timer
8. Traffic lights
9. Mobile phones
10. Automatic glass doors in shopping malls
11. Fuel tank indicator in modern automobiles.
To identify the presence of any digital circuit in an electronic device, look for the answers to the following statements.
Among the given four statements, if any one or more than one observations are found, then there are huge chances that the particular device is consists of a digital circuit.
Prerequisites:
Before starting, there aren’t any pre-requisites. We will start from scratch and moving forward, and we will increase our understanding of the digital electronics stepwise step.
