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  • DECDecimal255

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Glowing emerald 0s and 1s weaving into a geometric grid with hexadecimal glyphs A–F, against a cosmic nebula in violet and magenta
Number systems

Why computers count in binary, but programmers think in hexadecimal

255, 0xFF, 0o377 and 0b11111111 are the same number — only the notation changes. Here is why the transistor forced machines into binary, why humans cannot read raw bits without hex, and where chmod 755, the colour #00FF00 and the oldest trap in programming — the leading zero — come from.

10 min

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