PC Clones

Some articles on pc clones, pc:

History Of Personal Computers - The IBM PC - IBM PC Clones
... The original PC design was followed up in 1983 by the IBM XT, which was an incrementally improved design it omitted support for the cassette, had more card ... Although the PC and XT included a version of the BASIC language in read-only memory, most were purchased with disk drives and run with an operating system ... One was CP/M-86 from Digital Research, the second was PC-DOS from IBM, and the third was the UCSD p-System (from the University of California at San ...