CP/M

Trademark.

1. Control Program/Microprocessors: a microcomputer operating system.

CP/M

noun

1. an operating system widely used on microcomputers to enable a wide range of software from many suppliers to be run on them

Example Sentences

At the time, Gary Kildall’s CP/M operating system was the industry standard.

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Even though the newly established Microsoft company couldn’t fill IBM’s needs, Gates and Allen saw an opportunity, and so they hurriedly bought the rights to another local company’s OS — which was based on Kildall’s CP/M system.

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It was sold for a quarter of the price of CP/M, a rival's product, and IBM's market power did the rest.

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Looking back, this was the nail in the coffin for CP/M, or competing PC operating systems for years to come. 

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Mr. Kildall, who died in 1994, invented the CP/M operating system in 1974, and it was the standard operating system for most PCs until the early 1980s.

Read more on New York Times