Files types/kinds/formats | AP CSP (article) | Khan Academy
https://www.khanacademy.org/computing/computers-and-internet/xcae6f4a7ff015e7d:computers/xcae6f4a7ff015e7d:computer-files/a/file-types-kinds-extensions
WebFile types. Computers store all files as binary data, long strings of 1 s and 0 s. Files represent all different types of data, however—like images, videos, documents, text files, and spreadsheets. Even applications are files.
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