Kilobyte

The kilobyte is a multiple of the unit byte for digital information. Although the prefix kilo- means 1000, the term kilobyte and symbol kB have historically been used to refer to either 1024 (2) bytes or 1000 (10) bytes, dependent upon context, in the fields of computer science and information technology. For example: The HP 21MX real-time computer (1974) denoted 196,608 (which is 192×1024) as "196K", while the HP 3000 business computer (1973) denoted 131,072 (which is 128×1024) as "128K".

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