

An important driver of software innovation was the advent of (comparatively) low-cost microcomputers running CP/M, as independent programmers and hackers bought them and shared their creations in user groups.
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CP/M increased the market size for both hardware and software by greatly reducing the amount of programming required to install an application on a new manufacturer's computer. The combination of CP/M and S-100 bus computers loosely patterned on the MITS Altair was an early industry standard for microcomputers, and this computer platform was widely used in business through the late 1970s and into the mid-1980s. 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. Intel 8080, Intel 8085, Zilog Z80, Zilog Z8000, Intel 8086, Motorola 68000ĬP/M, originally standing for Control Program/Monitor (Kernel/Console) and later Control Program for Microcomputers, is a mass-market operating system created for Intel 8080/ 85-based microcomputers by Gary Kildall of Digital Research, Inc. Originally closed source, now open source
