INTRODUCTION TO DIGITAL ELECTRONICS

What is Digital Electronics?

Digital Electronics is a part of Electronics Engineering. It works with digital signals — only 0 and 1. Digital circuits are used in computers, mobile phones, calculators, digital watches, and almost all modern gadgets.

Digital Electronics is used everywhere today because it is fast, accurate, easy to store, and not affected by noise.

Electrical Engineering

 ↓

    Electronics Engineering

 ↓

  Digital Electronics

In easy words:

• Electrical Engineering → Deals with big electricity
• Electronics Engineering → Deals with small electronic parts
• Digital Electronics → Deals with 0s and 1s

DIFFERENCE BETWEEN ELECTRICAL AND ELECTRONIC ENGINEERING

ELECTRICAL ENGINEERING:- 

This is a professional engineering field that mainly deals with:

1.     Electronics (small electric parts).
2.     Electricity (power and current).
3.     Electromagnetism (how electric power creates magnetic force).
4.     High-voltage machines like:

• Transformers

• Motors

• Generators

• Power lines

▶ In Simple Words it is the study of how electricity is made, moved, and used safely.

ELECTRONIC ENGINEERING:- 

This is a part of Electrical Engineering where we work with low-voltage devices like:

• Semiconductors

• Transistors

• Diodes

• Chips

• ICs (Integrated Circuits)

We use these to design electronic circuits, VLSI devices, and small electronic systems. Focuses on tiny components used inside mobiles, computers, TVs, etc

▶ In Simple Words It is the study of small electronic parts that run on low power, used to make chips and circuits.

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DIFFERENCE BETWEEN ANALOG AND DIGITAL SYSTEM

ANALOG SYSTEM:-  In an analog representation, the information is denoted by using a continuous value. It is defined as physical quantity which varies continuously with respect to time.

• It is in the form of waves. 
• Output changes smoothly.
• More affected by noise.
• E.g. watch, amplifier, radio etc.

👉 Advantages of Analog

1. Simple circuits
2. Natural signals (sound, temperature) are analog

👉 Disadvantages of Analog

1. Noise problems
2. Hard to store
3. Less accurate

DIGITAL SYSTEM:- In digital representation, the information is denoted by using a finite sequence of discrete values or digits. It converts information into Binary form.

• Digital signals are in the form of square waves. 
• Output changes in steps.
• Not affected much by noise.
• E.g. digital watch, digital thermometer, digital BP machine etc.

TRUE = 1 = HIGH = ON

FALSE = 0 = LOW = OFF

👉 Advantages of Digital

1. High speed
2. High accuracy
3. Easy storage
4. Less power consumption
5. Reliable

👉 Disadvantages of Digital

1. More complex
2. Needs conversion from analog to digital

Conclusion:- 

Digital electronics is basically the heart of all modern gadgets. Everything we use today — mobiles, laptops, smartwatches, TVs, and even medical machines — works using 0s and 1s.

Once you learn these basic ideas, it becomes much easier to understand things like logic gates and other digital circuits. In simple words, digital electronics is the base that helps all modern smart devices work.