A personal blog where I share notes, opinions, and lessons learned across all kinds of topics — not limited to a single field.
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The latest articles on the blog
Oct 14, 2026 · Rizki Kadafi
Why I'm building a simple, offline-first shop management app for my parents' retail store — and what changes when the people using your software don't consider themselves tech-savvy.
Jan 20, 2025 · Rizki Kadafi
How Boolean algebra lets us describe, evaluate, and build logic circuits using expressions like x = AB + C.
Jan 18, 2025 · Rizki Kadafi
An introduction to the three basic logic gates — OR, AND, and NOT — with truth tables, analogies, and symbols.
Jan 16, 2025 · Rizki Kadafi
How computers represent numbers using binary, hexadecimal, BCD, and other codes like ASCII and Gray code.
Jan 14, 2025 · Rizki Kadafi
The building blocks of modern computing: how digital systems interpret electrical signals into binary, and the advantages of digital over analog representation.
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