CPM
     Control Program for Microcomputers (OS, DR), "CP/M"

	

	CPM
     Cost Per Minute

	

	CPM
     Critical Path Method

	

	CP/M /C-P-M/ n. [Control Program/Monitor; later retconned to Control
   Program for Microcomputers] An early microcomputer OS written by
   hacker Gary Kildall for 8080- and Z80-based machines, very popular in
   the late 1970s but virtually wiped out by MS-DOS after the release of
   the IBM PC in 1981. Legend has it that Kildall's company blew its chance
   to write the OS for the IBM PC because Kildall decided to spend a day
   IBM's reps wanted to meet with him enjoying the perfect flying weather
   in his private plane. Many of CP/M's features and conventions strongly
   resemble those of early DEC operating systems such as TOPS-10,
   OS/8, RSTS, and RSX-11. See MS-DOS, operating system.

	

	CPM
     
        Control Program for Microcomputers

	

	CP/M
     
        Control Program for Microcomputers

	

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