Rounding Error
/ˈraʊn-dɪŋ ˈer-ər/
noun — “the tiny mismatch between what a number is, and what a computer can afford to remember.”
Rounding error is the difference between an exact mathematical value and its finite approximation when represented in a digital system. It appears whenever a number must be shortened, simplified, or forced into a format that cannot store infinite precision, especially in floating-point arithmetic.
Float
/floʊt/
noun — “a number that refuses to sit still, always sliding between precision and approximation depending on context.”
Float (short for floating-point number) is a numerical representation used in computing to approximate real numbers using a finite amount of memory. Unlike integer types, which represent whole numbers exactly, a float is designed to handle fractions, extremely large values, and extremely small values by storing numbers in a scientific-notation-like format.
Decimal
/ˈdes-ə-məl/
noun — “base ten… the number system humans picked mostly because we have ten fingers and nobody bothered to renegotiate.”
Octal
/ˈɒk-təl/
noun — “base eight, where binary gets bundled into neat little 3-bit packets and pretends that makes life simpler.”
Octal is a positional number system with base 8, using digits 0–7. It is most commonly encountered as a compact representation of binary data, where each octal digit corresponds exactly to a group of three bits. In practice, this makes it a slightly older but still elegant sibling to hexadecimal.
The core idea is simple: binary is verbose. Octal is a compression trick.
Hacker Culture
/ˈhækər ˈkʌlʧər/
noun — “the chaotic ecosystem of curiosity, cleverness, obsession, and late-night experimentation.”
Hacker Culture refers to the social philosophy, traditions, humor, values, and creative mindset that emerged from early computing communities and evolved alongside modern technology. At its core, hacker culture celebrates exploration, technical mastery, playful experimentation, open knowledge-sharing, and the belief that systems can always be understood more deeply than their creators intended.
Simulation
/ˌsɪmjʊˈleɪʃən/
noun — "the imitation of a real system over time."
Digital Signal Processing
/ˈdɪdʒɪtl ˈsɪgnəl ˈprəʊsɛsɪŋ/
noun — "analyzing and modifying signals with algorithms."
Operating System
/ˈɒpəreɪtɪŋ ˈsɪstəm/
noun — "software that governs hardware and programs."
Least Recently Used
/ˌɛl ɑː ˈjuː/
noun — "evict the item not used for the longest time."
LRU, short for Least Recently Used, is a cache replacement and resource management policy that discards the item whose last access occurred farthest in the past when space is needed. It is based on the assumption that data accessed recently is more likely to be accessed again soon, while data not accessed for a long time is less likely to be reused. This principle aligns closely with temporal locality, a common property of real-world workloads.
Masking
/ˈmæskɪŋ/
noun — "selectively hiding or preserving bits."
Masking is the process of using a binary pattern, called a mask, to selectively manipulate, hide, or preserve specific bits within a data word or byte through bitwise operations. It is widely used in systems programming, embedded systems, digital communications, and data processing to isolate, modify, or test particular bits without affecting the remaining bits.