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Computing (FOLDOC) dictionary
Control Program for Microcomputers
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operating system (CP/M) An early microcomputer operatingsystem written by Gary Kildall of Digital Research for
8080 and Zilog Z80-based 8-bit computers. CP/M was very
popular in the late 1970s but was virtually wiped out by
MS-DOS after the release of the IBM PC in 1981.
Many of CP/M's features and conventions strongly resemble
those of early DEC operating systems such as TOPS-10,
CP/M might have been the OS for the IBM PC instead of
MS-DOS but Kildall wanted to keep control of his creation
and only license it to IBM. Big Blue however wanted to own
and control it completely. Kildall spent the day IBM's reps
wanted to meet him enjoying the perfect flying weather in his
private plane.