Readers Respond: 25 More Top Technologies
Readers respond to the eWEEK slide show, "25 More Top Technologies."The article "25 More Top Technologies" refers to CP/M and QDOS as "the spiritual and the actual parents, respectively, of what became MS-DOS" [Sept. 18]. Its sad to see CP/M, the operating system that helped establish the largest part of the PC market before the IBM PC, given the same status as QDOS, a functional equivalent of CP/M that existed only long enough to be bought by a young Microsoft. For decades since, there have been arguments and court cases over the relationship between CP/M and QDOS. Your one-line gloss does yet another injustice to history and Gary Kildall [the founder of Digital Research]. CP/M was the first product of Digital Research and was developed by Kildall as early as 1973. It became a product when offered as part of IMSAIs earliest floppy disk systems. CP/M-80 and, later, CP/M-86 were sold in enormous quantities through the early 1980s, and CP/M was the standard operating system for Intel- and Zilog-based computers.
Even after the IBM PC standardized on MS-DOS in 1981, Digital Research sold CP/M and other multitasking and multiuser products for many years (before Digital Research itself was sold).