![]() With this, DOS soon became the new standard. They quickly made a deal, and sold the operating system to IBM. What they did have was knowledge of the Seattle Computer Company, which had developed QDOS (Quick and Dirty Operating System). ![]() Microsoft didn’t, but they didn’t tell IBM this. IBM looked next to Microsoft, as they believed Microsoft had the rights to CP/M. The IBM representatives left Digital Research without ever explaining the reason for their visit. ![]() With Gary gone, Kildall’s wife and business associates were reluctant to sign the stringent IBM nondisclosure agreement. However, when IBM first approached Digital Research about using CP/M, the company’s founder, Gary Kildall, was out of the office for the day. When IBM was looking for an operating system for their soon to be introduced PC, CP/M was chosen. Of course, there are those who would point out that CP/M was modeled after unix. In fact, is appears that DOS used CP/M as a model. CP/M was a text based operating system, similar to DOS, however, CP/M existed long before DOS. Many computers that existed before the IBM PC used the CP/M operating system. Editorial notice: All opinions are those of the author and not necessarily those of ĭigital Research was the company that developed CP/M for the early personal/home computers. The history of Digital Research and GEM is quite interesting, as GEM had the potential to become the “Windows” (or Mac) of the PC world. Today GEM continues to be developed as FreeGEM and old and new versions of the GEM OS and GEM applications can be downloaded for free (see links below). GEM was described as providing a Mac like GUI for the PC – long before Microsoft Windows 3.1 or 95. ![]() One of the early GUI operating systems for the PC, that is still being developed today, is GEM, an operating system that was originally created by Digital Research in the early 1980s. ![]()
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