CP/M
![](/Images/godic/202502/17/CPM-864720.png")
![CP/M advertisement in December 11, 1978 issue of InfoWorld magazine](/Images/godic/202502/17/CP⁄M_Ad,_Dec_11,_19784720.png")
![CP/M advertisement in the November 29, 1982 issue of InfoWorld magazine.](/Images/godic/202502/17/CP⁄M_Ad,_InfoWorld,_November_29,_19824720.jpg")
CP/M, short for Control Program for Microcomputers, is a mass-market operating system created for Intel 8080/85-based microcomputers by Gary Kildall of Digital Research, Inc, Initially confined to single-tasking on 8-bit processors and no more than 64 kilobytes of memory, later versions of CP/M added multi-user variations and were migrated to 16-bit processors.