Thirty years after first learning 2’s complement, I revisited it — not just to remember how it works, but to understand why it works. What I found was a surprisingly elegant bridge between 17th-century mechanical calculators and modern binary arithmetic.
If you’ve ever wondered why flipping bits and adding one turns subtraction into addition, this deep dive might surprise you.
🔗 Read the full packet: “Subtraction Through Addition: The Power of Complements
Understanding Complement Arithmetic(hosted on GitHub)
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