Computer Science Concepts

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bit

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A binary digit, either 0 or 1.

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byte

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A sequence of 8 bits.

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roundoff

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Error that results when the number of bits is not enough to represent the number with full precision (like using 3 digits to represent π as 3.14).

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analog data

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Values that change smoothly, rather than in discrete intervals, over time. For example, the pitch and volume of a live concert.

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lossless

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Compressing data in a way that preserves all data away and allows full recovery of the original.

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lossy

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Compressing data in a way that discards some data and makes it impossible to recover the original.

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metadata

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Data about data, like descriptive information about a file or a row in a database.