Digital Electronics Lecture 3 | BCD, Excess-3 Code, Gray Code & Code Conversions

In this lecture, we will study BCD Code, Excess-3 Code, Gray Code and important code conversions in Digital Electronics. This lecture covers Decimal to BCD, BCD to Decimal, Decimal to Excess-3, Excess-3 to Decimal, Binary to Gray Code and Gray Code to Binary conversions with examples. These codes are very important in digital systems because they are used for decimal digit representation, error reduction, digital displays, counters, encoders, and position-based digital systems. Topics covered in this lecture: 00:00:00 ✅ Introduction 00:05:07 ✅ Why Do We Need Coded Representations? 00:06:37 ✅ Weighted vs Non-Weighted Codes 00:08:16 ✅ 8421 BCD (Binary Coded Decimal) Code 00:10:28 ✅ Decimal to BCD & BCD to Decimal Conversion 00:15:38 ✅ Invalid BCD Codes 00:16:53 ✅ Excess-3 Code 00:20:12 ✅ Reverse Excess-3 Code Conversion 00:21:16 ✅ Gray Code (Reflected Binary Code) 00:22:47 ✅ Gray Code Table Explanation 00:27:37 ✅ Binary to Gray Code Conversion 00:29:31 ✅ Gray Code to Binary Conversion 00:31:39 ✅ Summary Table / Comparison of Codes 00:34:12 ✅ Practice Questions 00:37:32 ✅ Summary This lecture is useful for B.Tech, BCA, MCA, Diploma, and Computer Science students who are studying Digital Electronics, Digital Logic Design, Computer Organization, or Computer Architecture. This is Lecture 3 of the Digital Electronics Complete Course. Watch the full playlist to learn Number Systems, Boolean Algebra, Logic Gates, Combinational Circuits, Sequential Circuits, Memory Organization, RTL, Micro-operations, ALU Design, and basic 8085 concepts. 📌 Digital Electronics Complete Playlist: https://www.youtube.com/playlist?list=PL1uhi2_UdvkC2l6nGBpFmS1GJItiPVOVz 📌 Download Lecture Notes: [Add Notes Link Here] Previous Lectures: Lecture 1: Introduction to Digital Electronics and Number Systems [Add Lecture 1 Link Here] Lecture 2: Number System Conversions [Add Lecture 2 Link Here] Recommended for: B.Tech CSE / IT / ECE Students BCA Students MCA Students Diploma Students AKTU / Autonomous College Students University Exam Preparation GATE / Basic Digital Logic Preparation About C 4 Yourself: C 4 Yourself is an educational platform dedicated to simplifying Computer Science and Engineering concepts through easy explanations, practical examples, and exam-oriented lectures. Subscribe to C 4 Yourself for more lectures on: ✅ Digital Electronics ✅ Operating System ✅ Computer Organization and Architecture ✅ C Programming ✅ Java Programming ✅ Python Programming ✅ Data Structures ✅ Artificial Intelligence ✅ IoT ✅ Computer Networks 🔔 Subscribe Now: https://www.youtube.com/@c4yourselfyt 📩 For queries/collaboration: c4yourselfyt@proton.me 🌐 Follow C 4 Yourself: YouTube: https://www.youtube.com/@c4yourselfyt Instagram: https://www.instagram.com/c4.yourself.yt/ LinkedIn: https://www.linkedin.com/company/c4.yourself.yt/ Facebook: https://www.facebook.com/c4yourselfofficial Telegram/WhatsApp Community: https://t.me/c4yourself Disclaimer: This video is created for educational purposes only. The content is prepared to help students understand Digital Electronics in a simple and structured manner. Students are advised to refer to their university syllabus, prescribed textbooks, and official study material for final examination preparation. Seekho. Apnao. Badho. #DigitalElectronics #BCDCode #GrayCode #Excess3Code #DigitalLogic #ComputerScience #BTechCSE #EngineeringStudents #C4Yourself