(R-1)'s Complement | 9's Complement | 1's Complement | Digital System Design | Lecture-20

In this lecture, we focus on (R–1)’s Complement – another important method used in Digital Arithmetic and Number System conversions. Complements are the foundation of subtraction in digital systems, and (R–1)’s Complement helps us perform subtraction using simple addition and complement rules. We explain the general concept of (R–1)’s Complement and then dive deeper into its special cases: 9’s Complement (for Decimal numbers) 1’s Complement (for Binary numbers) ✅ What you’ll learn in this lecture: Meaning and definition of (R–1)’s Complement Step-by-step process to find (R–1)’s complement in any base Detailed explanation of 9’s Complement in Decimal system Detailed explanation of 1’s Complement in Binary system Easy shortcuts and tricks for quick calculation Solved examples for both binary and decimal numbers Difference between R’s Complement and (R–1)’s Complement Applications of (R–1)’s Complement in subtraction and digital logic Exam-oriented questions for practice Why this lecture is important? 1’s Complement is one of the earliest methods used in computer arithmetic. 9’s Complement is widely used in decimal subtraction logic. Forms the base for subtraction using complements, which avoids direct subtraction circuits. Highly relevant for University Exams, GATE, and Competitive Exams. By the end of this lecture, you will have a strong understanding of (R–1)’s Complement, including 1’s and 9’s complements, and be ready to apply it in Subtraction using Complements. 🎥 Instructor: Naveen Singh 📚 Channel: Engineers Choice Tutor 📖 Subject: Digital System Design Playlist link :    • Digital System Design | Digital Circuit & ...   📌 Don’t forget to Like, Share, and Subscribe to stay updated with more exam-focused and easy-to-understand lectures. #rminus1complement #1scomplement #9scomplement #onescomplement #ninescomplement #complements #numbersystem #binaryarithmetic #decimalnumbers #digitalelectronics #digitalsystemdesign #binarysubtraction #decimalcomplement #binarymaths #computernumbersystem #engineeringmaths #gatepreparation #universityexams #digitalarithmetic #engineerschoicetutor