| Developer | UNIVAC | 
|---|---|
| Working state | Discontinued | 
| Platforms | UNIVAC 1107 | 
| Default user interface | Batch processing | 
| License | Proprietary | 
EXEC I is a discontinued UNIVAC's original operating system developed for the UNIVAC 1107 in 1962. EXEC I is a batch processing operating system that supportes multiprogramming.