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Digital ResearchDigital Research, Inc. (aka DR or DRI; originally Intergalactic Digital Research) was the company created by Dr. Gary Kildall to market and develop his CP/M operating system and related products. It was the first large software company in the microcomputer world. Digital Research should not be confused with Digital Equipment Corporation; the two were not affiliated. The company's operating systems, starting with CP/M for 8080/Z80-based microcomputers, were the de facto standard of their era, as MS-DOS and MS Windows became later. Digital Research was purchased by Novell in 1991, primarily for Novell to gain access to the OS line. DR's product suite included the original CP/M and its various offshoots; DR-DOS which was a MS-DOS compatible version of CP/M, and MP/M, the multi-user CP/M. DR produced a selection of programming language compilers and interpreters for their OS-supported platforms, including C, Pascal, COBOL, Forth and BASIC. They also produced a microcomputer version of the GKS graphics standard (related to NAPLPS) called GSX, and later used this as the basis of their GEM GUI. Less known are their application programs, limited largely to the GSX-based DR-DRAW and a small suite of GUI programs for GEM. Digital Research made the Multiuser DOS utility, which allowed multiple users to run DOS programs concurrently on the same computer.
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