University of Michigan Executive System
| Company type | Operating system |
|---|---|
| Industry | Computer software |
| Founded | 1958 |
| Founder | University of Michigan |
| Defunct | 1967 |
| Fate | Superseded by Michigan Terminal System (MTS) |
| Headquarters | Ann Arbor , United States |
| Products | Batch operating system for IBM mainframes (IBM 704, IBM 709, IBM 7090) |
The University of Michigan Executive System (UMES) was a batch operating system created in 1958 at the University of Michigan and gained widespread use among academic institutions. Its design was derived from the General Motors Executive System originally developed for the IBM 701, and it was modified to run efficiently on the university’s mainframe machines (IBM 704, IBM 709, and IBM 7090). UMES was specifically tuned to handle small-scale student tasks, which constituted the system's main workload.
This operating system continued to serve the University of Michigan until 1967, when it was superseded by the Michigan Terminal System (MTS). The transition allowed the university to take advantage of advanced features such as virtual memory and time-sharing provided by the IBM System/360 Model 67.
Programming languages available
See also
- Timeline of operating systems
- History of IBM mainframe operating systems
- Michigan Terminal System (MTS)
- Hardware: IBM 701, IBM 704, IBM 709, IBM 7090