COA | Unit-2 | Lecture-20 | Restoring Division Algorithm | AKTU B.Tech Computer Science

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In this video, we explain the Restoring Division Algorithm — a fundamental method used by digital computers to perform binary division using hardware registers.

You’ll learn how the algorithm works step-by-step using the AC (Accumulator) and QR (Quotient Register), how shifting and subtraction are performed, and why the remainder is restored when a subtraction becomes negative.
We also discuss how the divisor and dividend are loaded, how partial remainders are computed, and how the final quotient and remainder are obtained after all iterations.

With clear diagrams and solved numerical examples, this lecture makes the restoring division process easy to understand and helps you avoid common mistakes in binary division problems.

This topic belongs to Unit 2 – Arithmetic Algorithms in Computer Organization and Architecture (COA) as per the AKTU syllabus, and is very useful for GATE and NET Computer Science aspirants.

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