The Computers: Software: Operating Systems: Midrange: (Data General Midrange )

Data General (DG) was a firm that made minicomputers and their operating systems. It was acquired by EMC. DG's main operating systems (OSs) were AOS-VS and DGUX. Both systems are in decline. As with other software in this situation, legacy system users still need aid and support, so users are working together to keep systems running. Data General Midrange Operating Systems Software Computers.

Data General was one of the first minicomputer firms from the late 1960s. Three of the four founders were former employees of Digital Equipment Corporation. (wikipedia)